PHPC-2477: BSON_HAVE_ATOMIC constants are obsolete

CDRIVER-4124 removed BSON_HAVE_ATOMIC_32_ADD_AND_FETCH and BSON_HAVE_ATOMIC_64_ADD_AND_FETCH

Author: jmikola

config.m4

@@ -338,7 +338,6 @@ if test "$PHP_MONGODB" != "no"; then
     m4_include(PHP_MONGODB_BASEDIR/scripts/autotools/CheckHost.m4)
     m4_include(PHP_MONGODB_BASEDIR/scripts/autotools/PlatformFlags.m4)
 
-    m4_include(PHP_MONGODB_BASEDIR/scripts/autotools/libbson/CheckAtomics.m4)
     m4_include(PHP_MONGODB_BASEDIR/scripts/autotools/libbson/CheckHeaders.m4)
     m4_include(PHP_MONGODB_BASEDIR/scripts/autotools/libbson/Endian.m4)
     m4_include(PHP_MONGODB_BASEDIR/scripts/autotools/libbson/FindDependencies.m4)

config.w32

@@ -130,8 +130,6 @@ if (PHP_MONGODB != "no") {
     BSON_OS: 2,
     BSON_HAVE_STDBOOL_H: 0,
     BSON_HAVE_STRINGS_H: 0,
-    BSON_HAVE_ATOMIC_32_ADD_AND_FETCH: 0,
-    BSON_HAVE_ATOMIC_64_ADD_AND_FETCH: 0,
     BSON_PTHREAD_ONCE_INIT_NEEDS_BRACES: 0,
     BSON_HAVE_CLOCK_GETTIME: 0,
     BSON_HAVE_STRNLEN: 0,