Revert overriding of FetchContent for UR

Author: GeorgeWeb

sycl/plugins/unified_runtime/CMakeLists.txt

@@ -3,11 +3,10 @@
 
 # Options to override the default behaviour of the FetchContent to include UR
 # source code.
-# TODO: Resolve this tag override after related UR changes are merged.
 set(SYCL_PI_UR_OVERRIDE_FETCH_CONTENT_REPO
-  "https://github.com/GeorgeWeb/unified-runtime.git" CACHE STRING "Override the Unified Runtime FetchContent repository")
+  "" CACHE STRING "Override the Unified Runtime FetchContent repository")
 set(SYCL_PI_UR_OVERRIDE_FETCH_CONTENT_TAG
-  "78a71f3aa7a66f5592de6c910eb6bee2a2f97fcf" CACHE STRING "Override the Unified Runtime FetchContent tag")
+  "" CACHE STRING "Override the Unified Runtime FetchContent tag")
 
 # Options to disable use of FetchContent to include Unified Runtime source code
 # to improve developer workflow.