Disable MPM detection

mod_php is build twice
- as NTS without option
- as ZTS using --enable-maintainer-zts

diff --git a/sapi/apache2handler/config.m4 b/sapi/apache2handler/config.m4
index 2e64b21..ec4799f 100644
--- a/sapi/apache2handler/config.m4
+++ b/sapi/apache2handler/config.m4
@@ -116,17 +116,6 @@ if test "$PHP_APXS2" != "no"; then
     ;;
   esac
 
-  if test "$APACHE_VERSION" -lt 2004001; then
-    APXS_MPM=`$APXS -q MPM_NAME`
-    if test "$APXS_MPM" != "prefork" && test "$APXS_MPM" != "peruser" && test "$APXS_MPM" != "itk"; then
-      PHP_BUILD_THREAD_SAFE
-    fi
-  else
-    APACHE_THREADED_MPM=`$APXS_HTTPD -V | grep 'threaded:.*yes'`
-    if test -n "$APACHE_THREADED_MPM"; then
-      PHP_BUILD_THREAD_SAFE
-    fi
-  fi
   AC_MSG_RESULT(yes)
   PHP_SUBST(APXS)
 else
