Cleanup TailRec

Author: allanrenucci

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

@@ -31,6 +31,7 @@ object Printers {
   val plugins: Printer = noPrinter
   val simplify: Printer = noPrinter
   val subtyping: Printer = noPrinter
+  val tailrec: Printer = noPrinter
   val transforms: Printer = noPrinter
   val typr: Printer = noPrinter
   val unapp: Printer = noPrinter

compiler/src/dotty/tools/dotc/reporting/diagnostic/messages.scala

@@ -1804,7 +1804,7 @@ object messages {
     val symbolKind = symbol.showKind
     val msg =
       if (symbol.is(Method))
-        hl"TailRec optimisation not applicable, $symbol is neither ${"private"} nor ${"final"}."
+        hl"TailRec optimisation not applicable, method not tail recursive"
       else
         hl"TailRec optimisation not applicable, ${symbolKind} isn't a method."
     val explanation =