8279528: Unused TypeEnter.diag after JDK-8205187

Reviewed-by: vromero

Author: shipilev

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java

@@ -109,7 +109,6 @@ public class TypeEnter implements Completer {
     private final Annotate annotate;
     private final TypeAnnotations typeAnnotations;
     private final Types types;
-    private final JCDiagnostic.Factory diags;
     private final DeferredLintHandler deferredLintHandler;
     private final Lint lint;
     private final TypeEnvs typeEnvs;
@@ -137,7 +136,6 @@ protected TypeEnter(Context context) {
         annotate = Annotate.instance(context);
         typeAnnotations = TypeAnnotations.instance(context);
         types = Types.instance(context);
-        diags = JCDiagnostic.Factory.instance(context);
         deferredLintHandler = DeferredLintHandler.instance(context);
         lint = Lint.instance(context);
         typeEnvs = TypeEnvs.instance(context);