PHPC-2549: Remove BSON_EXTRA_ALIGN

Author: alcaeus

config.m4

@@ -329,7 +329,6 @@ if test "$PHP_MONGODB" != "no"; then
     PHP_MONGODB_BSON_VERSION_STRING="Bundled ($libbson_VERSION_FULL)"
     PHP_MONGODB_MONGOC_VERSION_STRING="Bundled ($libmongoc_VERSION_FULL)"
 
-    AC_SUBST(BSON_EXTRA_ALIGN, 0)
     AC_SUBST(BSON_OS, 1)
 
     AC_SUBST(MONGOC_ENABLE_MONGODB_AWS_AUTH, 0)

config.w32

@@ -136,7 +136,6 @@ if (PHP_MONGODB != "no") {
     BSON_HAVE_SNPRINTF: 0,
     BSON_HAVE_STRLCPY: 0,
     BSON_HAVE_TIMESPEC: 0,
-    BSON_EXTRA_ALIGN: 0,
     BSON_HAVE_GMTIME_R: 0,
     BSON_HAVE_RAND_R: 0,
     BSON_HAVE_ALIGNED_ALLOC: 0