ios: Remove workaround for previous Xcode dispatch bug.

Bug: 1103822
Change-Id: I498e38838cbc15aba3787a43f411e978d9d50ce3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2373264
Auto-Submit: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801225}

ios/chrome/test/earl_grey/chrome_test_case.mm

@@ -428,14 +428,6 @@ GREY_STUB_CLASS_IN_APP_MAIN_QUEUE(ChromeTestCaseAppInterface)
   GREYAssertTrue([ChromeEarlGrey isCustomWebKitLoadedIfRequested],
                  @"Unable to load custom WebKit");
 
-  // TODO(crbug.com/1103822): Investigate why this is causing EG2 tests to spin
-  // on iOS14.
-  if (base::ios::IsRunningOnIOS14OrLater()) {
-    [[GREYConfiguration sharedConfiguration]
-            setValue:@0
-        forConfigKey:kGREYConfigKeyDispatchAfterMaxTrackableDelay];
-  }
-
   [[self class] startHTTPServer];
   [[self class] enableMockAuthentication];