Bug 1420276: Backed out changeset 244c97bc16e3 since we don't want to ship this yet; r=backout

--HG--
extra : rebase_source : f7376192a23e85f8850ef5b250e35813ef72e0e3

mozglue/build/WindowsDllBlocklist.cpp

@@ -260,11 +260,6 @@ static const DllBlockInfo sWindowsDllBlocklist[] = {
   // Avecto Privilege Guard causes crashes, bug 1385542
   { "pghook.dll", ALL_VERSIONS },
 
-  // Microsoft UI automation causing performance problems on 57+, bug 1420276
-#if defined(MOZ_DEV_EDITION) || defined(RELEASE_OR_BETA)
-  { "uiautomationcore.dll", ALL_VERSIONS },
-#endif // defined(MOZ_DEV_EDITION) || defined(RELEASE_OR_BETA)
-
   { nullptr, 0 }
 };