Nicer deprecation messages

No need to print both `sym` and `sym.showLocated`, the second one is enough.

Author: smarter

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

@@ -640,8 +640,8 @@ object RefChecks {
     // If symbol is deprecated, and the point of reference is not enclosed
     // in either a deprecated member or a scala bridge method, issue a warning.
     if (sym.isDeprecated && !ctx.owner.ownersIterator.exists(_.isDeprecated)) {
-      ctx.deprecationWarning("%s%s is deprecated%s".format(
-        sym, sym.showLocated, sym.deprecationMessage map (": " + _) getOrElse ""), pos)
+      ctx.deprecationWarning("%s is deprecated%s".format(
+        sym.showLocated, sym.deprecationMessage map (": " + _) getOrElse ""), pos)
     }
     // Similar to deprecation: check if the symbol is marked with @migration
     // indicating it has changed semantics between versions.