Revert "Woraround systemd issue on CentOS 9-stream"

This reverts commit 113689ee4694de20c019735fdace447225aa18f7.

Reason for revert: systemd-252-17.el9 which includes the fix is now available in CentOS 9-stream repos.

Change-Id: I6fe19838a75a30fd5d2434c03b7f403f1c7e4b50
diff --git a/tools/fixup_stuff.sh b/tools/fixup_stuff.sh
index 80a83bb..faea44f 100755
--- a/tools/fixup_stuff.sh
+++ b/tools/fixup_stuff.sh
@@ -94,11 +94,6 @@
     if [[ $os_VENDOR == "CentOSStream" && $os_RELEASE -eq 8 ]]; then
         sudo sysctl -w net.ipv4.ping_group_range='0 2147483647'
     fi
-    # TODO(ykarel): Workaround for systemd issue, remove once fix is
-    # included in systemd rpm https://bugs.launchpad.net/devstack/+bug/2029335
-    if [[ $os_VENDOR == "CentOSStream" && $os_RELEASE -eq 9 ]]; then
-        echo 'LIBVIRTD_ARGS=""' | sudo tee /etc/sysconfig/libvirtd
-    fi
 }
 
 function fixup_ovn_centos {