Remove duplicated check in ObserveEventAfterAction

In ObserveEventAfterAction(), observedMatchingEvent is set if ok is
true. Now the ok is already checked with framework.ExpectEqual().
So this removes duplicated check for code cleanup.

test/e2e/common/events.go

@@ -121,7 +121,7 @@ func ObserveEventAfterAction(f *framework.Framework, eventPredicate func(*v1.Eve
 				e, ok := obj.(*v1.Event)
 				ginkgo.By(fmt.Sprintf("Considering event: \nType = [%s], Name = [%s], Reason = [%s], Message = [%s]", e.Type, e.Name, e.Reason, e.Message))
 				framework.ExpectEqual(ok, true)
-				if ok && eventPredicate(e) {
+				if eventPredicate(e) {
 					observedMatchingEvent = true
 				}
 			},