Remove outdated comments

Author: nicolasstucki

compiler/src/dotty/tools/repl/ReplCompiler.scala

@@ -280,7 +280,7 @@ class ReplCompiler extends Compiler {
         if (errorsAllowed || !ctx.reporter.hasErrors)
           unwrapped(unit.tpdTree, src)
         else
-          ctx.reporter.removeBufferedMessages.errors // Workaround #4988
+          ctx.reporter.removeBufferedMessages.errors
       }
     }
   }

tasty/src/dotty/tools/tasty/TastyFormat.scala

@@ -74,7 +74,6 @@ Standard-Section: "ASTs" TopLevelStat*
                   SPLITCLAUSE                                                      -- splits two non-empty parameter clauses of the same kind
   Param         = TypeParam
                   TermParam
-                                                																   -- needed if previous parameter clause is empty or another parameter clause follows
   Template      = TEMPLATE       Length TypeParam* TermParam* parent_Term* Self?
                                         Stat*                                      -- [typeparams] paramss extends parents { self => stats }, where Stat* always starts with the primary constructor.
   Self          = SELFDEF               selfName_NameRef selfType_Term             -- selfName : selfType