Reverts "[flutter_tools] Add --no-codesign support for macOS build (flutter#169034)" (flutter#172878)

<!-- start_original_pr_link -->
Reverts: flutter#169034
<!-- end_original_pr_link -->
<!-- start_initiating_author -->
Initiated by: vashworth
<!-- end_initiating_author -->
<!-- start_revert_reason -->
Reason for reverting: failing in post-submit
https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8708074284638575793/+/u/run_test.dart_for_analyze_shard_and_subshard_None/stdout
<!-- end_revert_reason -->
<!-- start_original_pr_author -->
Original PR Author: knopp
<!-- end_original_pr_author -->

<!-- start_reviewers -->
Reviewed By: {bkonyi, vashworth}
<!-- end_reviewers -->

<!-- start_revert_body -->
This change reverts the following previous change:
Unlike iOS, the macOS build currently does not support `--no-codesign`
option to skip signing of application bundle. Having this option is
useful for situation where the code-signing step is happens separately
after the bundle is built (i.e. on CI).

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

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[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
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https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
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Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>

Author: auto-submit[bot]

packages/flutter_tools/lib/src/commands/build_macos.dart

@@ -25,7 +25,6 @@ class BuildMacosCommand extends BuildSubCommand {
           'This can be used in CI/CD process that create an archive to avoid '
           'performing duplicate work.',
     );
-    argParser.addFlag('codesign', defaultsTo: true, help: 'Codesign the application bundle.');
   }
 
   @override
@@ -47,8 +46,6 @@ class BuildMacosCommand extends BuildSubCommand {
 
   bool get configOnly => boolArg('config-only');
 
-  bool get shouldCodesign => boolArg('codesign');
-
   @override
   Future<FlutterCommandResult> runCommand() async {
     final BuildInfo buildInfo = await getBuildInfo();
@@ -60,9 +57,6 @@ class BuildMacosCommand extends BuildSubCommand {
     if (!supported) {
       throwToolExit('"build macos" only supported on macOS hosts.');
     }
-    if (!shouldCodesign) {
-      globals.printStatus('Warning: Building with codesigning disabled.');
-    }
     await buildMacOS(
       flutterProject: project,
       buildInfo: buildInfo,
@@ -76,7 +70,6 @@ class BuildMacosCommand extends BuildSubCommand {
         analytics: analytics,
       ),
       usingCISystem: usingCISystem,
-      codesign: shouldCodesign,
     );
     return FlutterCommandResult.success();
   }

packages/flutter_tools/lib/src/macos/build_macos.dart

@@ -72,7 +72,6 @@ Future<void> buildMacOS({
   bool configOnly = false,
   SizeAnalyzer? sizeAnalyzer,
   bool usingCISystem = false,
-  bool codesign = true,
 }) async {
   final Directory? xcodeWorkspace = flutterProject.macos.xcodeWorkspace;
   if (xcodeWorkspace == null) {
@@ -225,11 +224,6 @@ Future<void> buildMacOS({
         if (disabledSandboxEntitlementFile != null)
           'CODE_SIGN_ENTITLEMENTS=${disabledSandboxEntitlementFile.path}',
         ...environmentVariablesAsXcodeBuildSettings(globals.platform),
-        if (!codesign) ...<String>[
-          'CODE_SIGNING_ALLOWED=NO',
-          'CODE_SIGNING_REQUIRED=NO',
-          'CODE_SIGNING_IDENTITY=""',
-        ],
       ],
       trace: true,
       stdoutErrorMatcher: verboseLogging ? null : _filteredOutput,

packages/flutter_tools/test/commands.shard/hermetic/build_macos_test.dart

@@ -1010,58 +1010,4 @@ STDERR STUFF
       OperatingSystemUtils: () => FakeOperatingSystemUtils(hostPlatform: HostPlatform.darwin_x64),
     },
   );
-
-  testUsingContext(
-    'macos build --no-codesign skips codesigning',
-    () async {
-      final BuildCommand command = BuildCommand(
-        androidSdk: FakeAndroidSdk(),
-        buildSystem: TestBuildSystem.all(BuildResult(success: true)),
-        logger: logger,
-        fileSystem: fileSystem,
-        osUtils: FakeOperatingSystemUtils(hostPlatform: HostPlatform.darwin_arm64),
-      );
-      fakeProcessManager.addCommands(<FakeCommand>[
-        const FakeCommand(
-          command: <String>[
-            '/usr/bin/env',
-            'xcrun',
-            'xcodebuild',
-            '-workspace',
-            '/macos/Runner.xcworkspace',
-            '-configuration',
-            'Release',
-            '-scheme',
-            'Runner',
-            '-derivedDataPath',
-            '/build/macos',
-            '-destination',
-            'generic/platform=macOS',
-            'OBJROOT=/build/macos/Build/Intermediates.noindex',
-            'SYMROOT=/build/macos/Build/Products',
-            '-quiet',
-            'COMPILER_INDEX_STORE_ENABLE=NO',
-            'CODE_SIGNING_ALLOWED=NO',
-            'CODE_SIGNING_REQUIRED=NO',
-            'CODE_SIGNING_IDENTITY=""',
-          ],
-        ),
-      ]);
-      createMinimalMockProjectFiles();
-
-      await createTestCommandRunner(
-        command,
-      ).run(const <String>['build', 'macos', '--no-pub', '--no-codesign']);
-      expect(fakeProcessManager, hasNoRemainingExpectations);
-      expect(logger.statusText, contains('Warning: Building with codesigning disabled.'));
-    },
-    overrides: <Type, Generator>{
-      FileSystem: () => fileSystem,
-      Logger: () => logger,
-      ProcessManager: () => fakeProcessManager,
-      Pub: ThrowingPub.new,
-      Platform: () => macosPlatform,
-      OperatingSystemUtils: () => FakeOperatingSystemUtils(hostPlatform: HostPlatform.darwin_arm64),
-    },
-  );
 }