remove unnecessary changes in Comments.scala

Author: rochala

compiler/src/dotty/tools/dotc/core/Comments.scala

@@ -62,7 +62,6 @@ object Comments {
       expanded.map(removeSections(_, "@usecase", "@define"))
 
     val isDocComment: Boolean = Comment.isDocComment(raw)
-    val isHeaderComment: Boolean = Comment.isHeaderComment(raw)
 
     /**
      * Expands this comment by giving its content to `f`, and then parsing the `@usecase` sections.
@@ -79,12 +78,8 @@ object Comments {
   }
 
   object Comment {
-    val usingDirectives: List[String] = List("// using", "//> using")
-    val ammoniteHeaders: List[String] = List("// scala", "// ammonite")
 
     def isDocComment(comment: String): Boolean = comment.startsWith("/**")
-    def isHeaderComment(comment: String): Boolean =
-      (usingDirectives ++ ammoniteHeaders).exists(comment.startsWith)
 
     def apply(span: Span, raw: String): Comment =
       Comment(span, raw, None, Nil, Map.empty)