Fix rebase breakage

Author: odersky

compiler/src/dotty/tools/dotc/parsing/Parsers.scala

@@ -22,7 +22,7 @@ import Constants._
 import Symbols.defn
 import ScriptParsers._
 import Decorators._
-import scala.internal.Chars.isIdentifierStart
+import scala.internal.Chars
 import scala.annotation.{tailrec, switch}
 import rewrites.Rewrites.patch