Remove metalava --no-banner argument

metalava no longer prints an ASCII banner, and has removed its
--no-banner argument. Update all call sites accordingly.

Test: presubmit
Bug: 286023667
Change-Id: I61cf5f1125dfbd93496e6a59eb1ea62886b32046

java/droidstubs.go

@@ -525,8 +525,7 @@ func metalavaCmd(ctx android.ModuleContext, rule *android.RuleBuilder, javaVersi
 		cmd.FlagWithInputList("-classpath ", classpath.Paths(), ":")
 	}
 
-	cmd.Flag("--no-banner").
-		Flag("--color").
+	cmd.Flag("--color").
 		Flag("--quiet").
 		Flag("--format=v2").
 		FlagWithArg("--repeat-errors-max ", "10").