[ios] Removed checkLinkPresenceUnderGesture API as unused.

ios/web/web_state/ui/crw_web_controller.mm

Index: ios/web/web_state/ui/crw_web_controller.mm
diff --git a/ios/web/web_state/ui/crw_web_controller.mm b/ios/web/web_state/ui/crw_web_controller.mm
index 516374bb17f410c6e94c5dd71dafcd5349b51b74..40b23e907dc1fcfda56b0b8e6d2e9013e6293a8e 100644
--- a/ios/web/web_state/ui/crw_web_controller.mm
+++ b/ios/web/web_state/ui/crw_web_controller.mm
@@ -1298,17 +1298,6 @@ const NSTimeInterval kSnapshotOverlayTransition = 0.5;
   _webStateImpl = nullptr;
 }
 
-- (void)checkLinkPresenceUnderGesture:(UIGestureRecognizer*)gestureRecognizer
-                    completionHandler:(void (^)(BOOL))completionHandler {
-  CGPoint webViewPoint = [gestureRecognizer locationInView:_webView];
-  base::WeakNSObject<CRWWebController> weakSelf(self);
-  [self fetchDOMElementAtPoint:webViewPoint
-             completionHandler:^(NSDictionary* element) {
-               BOOL hasLink = [element[@"href"] length];
-               completionHandler(hasLink);
-             }];
-}
-
 - (void)setDOMElementForLastTouch:(NSDictionary*)element {
   _DOMElementForLastTouch.reset([element copy]);
 }