AuthFallback: Stay in Riot App

When doing a SAML based SSO via Gsuite, I must click a link
specifying that I trust this app. That link will break me
out of the SSO sign-in process, and open up safari.

To fix address this, I've removed the feature that opens links in
safari.

Signed-off-by: Mark Schulte <schultetwin@gmail.com>

Riot/Modules/Home/Fallback/AuthFallBackViewController.m

@@ -203,14 +203,6 @@ NSString *FallBackViewControllerJavascriptOnLogin = @"window.matrixLogin.onLogin
         return;
     }
 
-    if (navigationAction.navigationType == WKNavigationTypeLinkActivated)
-    {
-        // Open links outside the app
-        [[UIApplication sharedApplication] openURL:navigationAction.request.URL options:@{} completionHandler:nil];
-        decisionHandler(WKNavigationActionPolicyCancel);
-        return;
-    }
-
     decisionHandler(WKNavigationActionPolicyAllow);
 }