Disable MPM detection

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

diff -up ./sapi/apache2handler/config.m4.mpmcheck ./sapi/apache2handler/config.m4
--- ./sapi/apache2handler/config.m4.mpmcheck	2024-07-03 15:56:56.882370597 +0200
+++ ./sapi/apache2handler/config.m4	2024-07-03 15:59:15.967824949 +0200
@@ -105,16 +105,4 @@ if test "$PHP_APXS2" != "no"; then
     INSTALL_IT="$INSTALL_IT $SAPI_LIBTOOL"
     ;;
   esac
-
-  if test "$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=`$APXS_HTTPD -V 2>/dev/null | grep 'threaded:.*yes'`
-    if test -n "$APACHE_THREADED_MPM"; then
-      PHP_BUILD_THREAD_SAFE
-    fi
-  fi
 fi