[UR] Remove UMF_DISABLE_HWLOC flag (#17676)

This flag will be removed from UMF. Either `hwloc` installed in the
system is used or it's fetched if not found.

Ref.: #15261

Author: PatKamin

.github/workflows/ur-source-checks.yml

@@ -33,7 +33,7 @@ jobs:
       if: matrix.os == 'ubuntu-22.04'
       run: |
         sudo apt-get update
-        sudo apt-get install -y doxygen
+        sudo apt-get install -y doxygen libhwloc-dev
 
     - name: "[Win] Install doxygen"
       if: matrix.os == 'windows-2022'
@@ -53,7 +53,6 @@ jobs:
         -DCMAKE_BUILD_TYPE=Debug
         -DUR_BUILD_TESTS=OFF
         -DUR_FORMAT_CPP_STYLE=ON
-        -DUMF_DISABLE_HWLOC=ON
 
     # Verifying license should be enough on a single OS
     - name: Verify that each source file contains a license

sycl/cmake/modules/FetchUnifiedRuntime.cmake

@@ -87,8 +87,6 @@ if(IS_DIRECTORY "${UR_INTREE_SOURCE_DIR}")
   if(WIN32)
     set(UMF_BUILD_SHARED_LIBRARY OFF CACHE INTERNAL "Build UMF shared library")
     set(UMF_LINK_HWLOC_STATICALLY ON CACHE INTERNAL "static HWLOC")
-  else()
-    set(UMF_DISABLE_HWLOC ${SYCL_UMF_DISABLE_HWLOC} CACHE INTERNAL "Disable hwloc for UMF")
   endif()
   add_subdirectory(${UNIFIED_RUNTIME_SOURCE_DIR} ${UR_INTREE_BINARY_DIR})
 elseif(SYCL_UR_USE_FETCH_CONTENT)