Revert "[OpenMP] Add memory allocation using hwloc (llvm#132843)"

This reverts commit 730e8a4.

Author: ronlieb

openmp/runtime/src/kmp.h

@@ -1111,7 +1111,6 @@ extern omp_allocator_handle_t __kmp_def_allocator;
 #endif
 
 extern int __kmp_memkind_available;
-extern bool __kmp_hwloc_available;
 
 typedef struct kmp_memspace_t {
   omp_memspace_handle_t memspace;
@@ -1128,9 +1127,6 @@ typedef struct kmp_allocator_t {
   kmp_uint64 pool_size;
   kmp_uint64 pool_used;
   bool pinned;
-#if KMP_USE_HWLOC
-  omp_alloctrait_value_t membind;
-#endif
 } kmp_allocator_t;
 
 extern omp_memspace_handle_t

openmp/runtime/src/kmp_affinity.cpp

@@ -1444,7 +1444,6 @@ void KMPAffinity::pick_api() {
   if (__kmp_affinity_top_method == affinity_top_method_hwloc &&
       __kmp_affinity.type != affinity_disabled) {
     affinity_dispatch = new KMPHwlocAffinity();
-    __kmp_hwloc_available = true;
   } else
 #endif
   {