shared/cpu-set-util: remove now-unused CPU_SIZE_TO_NUM()
(cherry picked from commit b12ef7141648be40fd8c4b0209a742f2151736d9)
Related: #1734787
patch_name: 0271-shared-cpu-set-util-remove-now-unused-CPU_SIZE_TO_NU.patch
present_in_specfile: true
location_in_specfile: 271
squash_commits: true