Delete non-Chromium style custom GREYAction.

ios/chrome/test/earl_grey/chrome_actions.mm

Index: ios/chrome/test/earl_grey/chrome_actions.mm
diff --git a/ios/chrome/test/earl_grey/chrome_actions.mm b/ios/chrome/test/earl_grey/chrome_actions.mm
index 6c4eb6c1eb5097ebbd4f827dfd1db020bc1e55cf..229479a5201973c6a2e9bbf35e08a0168b9e21f0 100644
--- a/ios/chrome/test/earl_grey/chrome_actions.mm
+++ b/ios/chrome/test/earl_grey/chrome_actions.mm
@@ -22,11 +22,6 @@ id<GREYAction> LongPressElementForContextMenu(const std::string& element_id,
       triggers_context_menu);
 }
 
-id<GREYAction> longPressElementForContextMenu(const std::string& element_id,
-                                              bool triggers_context_menu) {
-  return LongPressElementForContextMenu(element_id, triggers_context_menu);
-}
-
 id<GREYAction> TurnCollectionViewSwitchOn(BOOL on) {
   id<GREYMatcher> constraints = grey_not(grey_systemAlertViewShown());
   NSString* actionName =