Drop "Dotty deviation" messages that are no longer applicable.

Author: odersky

compiler/src/dotty/tools/dotc/config/PathResolver.scala

@@ -143,7 +143,7 @@ object PathResolver {
       println(Defaults)
     }
     else {
-      implicit val ctx = (new ContextBase).initialCtx // Dotty deviation: implicits need explicit type
+      implicit val ctx = (new ContextBase).initialCtx
       val ArgsSummary(sstate, rest, errors) =
         ctx.settings.processArguments(args.toList, true)
       errors.foreach(println)

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

@@ -3378,7 +3378,7 @@ object Types {
 
     /** Map this function over given type */
     def mapOver(tp: Type): Type = {
-      implicit val ctx = this.ctx // Dotty deviation: implicits need explicit type
+      implicit val ctx = this.ctx
       tp match {
         case tp: NamedType =>
           if (stopAtStatic && tp.symbol.isStatic) tp

compiler/src/dotty/tools/dotc/typer/Typer.scala

@@ -1638,7 +1638,7 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit
       tryInsertImplicitOnQualifier(tree, pt).getOrElse(fallBack)
 
     if (isApplyProto(pt)) tryImplicit
-    else tryEither(tryApply(_))((_, _) => tryImplicit) 
+    else tryEither(tryApply(_))((_, _) => tryImplicit)
   }
 
   /** If this tree is a select node `qual.name`, try to insert an implicit conversion