Revert "Add flagged api hide conditional to droidstubs"

Revert submission 2755310

Reason for revert: Broken build b/302407753

Reverted changes: /q/submissionid:2755310

Change-Id: I56306fc3b7e5608d21dbefe18d6a886561599f40

java/droidstubs.go

@@ -540,10 +540,6 @@ func metalavaCmd(ctx android.ModuleContext, rule *android.RuleBuilder, javaVersi
 	// See b/285312164 for more information.
 	cmd.FlagWithArg("--format-defaults ", "overloaded-method-order=source")
 
-	if ctx.DeviceConfig().HideFlaggedApis() {
-		cmd.FlagWithArg("--hide-annotation ", "android.annotation.FlaggedApi")
-	}
-
 	return cmd
 }