Actions: remove unused function `isSubmitEnabled`

Change-Id: I081be3cc8bf153736fbb7c0f12b969593cb805fb
diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/change/Actions.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/change/Actions.java
index f5fa6dd..71231e4 100644
--- a/gerrit-gwtui/src/main/java/com/google/gerrit/client/change/Actions.java
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/change/Actions.java
@@ -150,10 +150,6 @@
     submit.setVisible(canSubmit);
   }
 
-  boolean isSubmitEnabled() {
-    return submit.isVisible() && submit.isEnabled();
-  }
-
   @UiHandler("followUp")
   void onFollowUp(@SuppressWarnings("unused") ClickEvent e) {
     if (followUpAction == null) {