remove tasty-core-scala2 (dead project)

[Cherry-picked aa8a7b6]

Author: hamzaremmal

build.sbt

@@ -34,7 +34,6 @@ val `tasty-core` = Build.`tasty-core`
 val `tasty-core-nonbootstrapped` = Build.`tasty-core-nonbootstrapped`
 val `tasty-core-bootstrapped-new` = Build.`tasty-core-bootstrapped-new`
 val `tasty-core-bootstrapped` = Build.`tasty-core-bootstrapped`
-val `tasty-core-scala2` = Build.`tasty-core-scala2`
 val scaladoc = Build.scaladoc
 val `scaladoc-new` = Build.`scaladoc-new`
 val `scaladoc-testcases` = Build.`scaladoc-testcases`

project/Build.scala

@@ -2920,7 +2920,6 @@ object Build {
 
   lazy val `tasty-core` = project.in(file("tasty")).asTastyCore(NonBootstrapped)
   lazy val `tasty-core-bootstrapped`: Project = project.in(file("tasty")).asTastyCore(Bootstrapped)
-  lazy val `tasty-core-scala2`: Project = project.in(file("tasty")).asTastyCoreScala2
 
   def tastyCore(implicit mode: Mode): Project = mode match {
     case NonBootstrapped => `tasty-core`
@@ -4046,17 +4045,6 @@ object Build {
         ),
       )
 
-    def asTastyCoreScala2: Project = project
-      .settings(commonScala2Settings)
-      // need to add @annotation.internal.sharable to the classpath for compiling
-      // we don't actually publish this library anywhere, so it's fine.
-      // if someone depends on the sources of tasty-core in a scala 2 project,
-      // they should strip the sharable annotation, or add -Ytasty-reader
-      .dependsOn(dottyLibrary(NonBootstrapped) % Provided)
-      .settings(
-        scalacOptions += "-Ytasty-reader" // to read scala3 library
-      )
-
     /*def asDottyBench(implicit mode: Mode): Project = project.withCommonSettings.
       dependsOn(dottyCompiler).
       settings(commonBenchmarkSettings).