only keep needed function in fake path provider

Author: lohanidamodar

tests/languages/flutter/tests.dart

@@ -7,47 +7,10 @@ import '../lib/models.dart';
 import 'dart:io';
 
 class FakePathProvider extends PathProviderPlatform {
-  @override
-  Future<String?> getTemporaryPath() async {
-    return '.';
-  }
-
-  @override
-  Future<String?> getApplicationSupportPath() async {
-    return '.';
-  }
-
-  @override
-  Future<String?> getLibraryPath() async {
-    return '.';
-  }
-
   @override
   Future<String?> getApplicationDocumentsPath() async {
     return '.';
   }
-
-  @override
-  Future<String?> getExternalStoragePath() async {
-    return '.';
-  }
-
-  @override
-  Future<List<String>?> getExternalCachePaths() async {
-    return <String>['.'];
-  }
-
-  @override
-  Future<List<String>?> getExternalStoragePaths({
-    StorageDirectory? type,
-  }) async {
-    return <String>['.'];
-  }
-
-  @override
-  Future<String?> getDownloadsPath() async {
-    return '.';
-  }
 }