devel/rubygem-concurrent-ruby-ext: Fix build with Clang 15 and remove the workaround
atomic_reference.c:108:53: error: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'void *' [-Wint-conversion]
if (__sync_bool_compare_and_swap(&DATA_PTR(self), expect_value, new_value)) {
^~~~~~~~~~~~atomic_reference.c:108:67: error: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'void *' [-Wint-conversion]
if (__sync_bool_compare_and_swap(&DATA_PTR(self), expect_value, new_value)) {
^~~~~~~~~2 errors generated.