Remove bad check from UkmService::EnableReporting

components/ukm/ukm_service.cc

Index: components/ukm/ukm_service.cc
diff --git a/components/ukm/ukm_service.cc b/components/ukm/ukm_service.cc
index 823bff5fb368bbe1278aecd598f42adfab331284..cbab848c255c7d29f813b0ebf5ad9d9655b15953 100644
--- a/components/ukm/ukm_service.cc
+++ b/components/ukm/ukm_service.cc
@@ -126,9 +126,6 @@ void UkmService::Initialize() {
 void UkmService::EnableReporting() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DVLOG(1) << "UkmService::EnableReporting";
-#if defined(OFFICIAL_BUILD)
-  CHECK(false);  // Remove this once UKM checks sync state.
-#endif
   if (!initialize_started_)
     Initialize();
   scheduler_->Start();