setfacl -m works but setfacl -x does not work

I have the following code in a bash file:

sudo setfacl -m g:jobq:x /usr/local/sbin/jobq_submit
sudo setfacl -m g:jobq:x /usr/local/sbin/jobq_server
sudo setfacl -m g:jobq:x /usr/local/sbin/jobq_server_stop
sudo setfacl -m g:jobq:x /usr/local/sbin/jobq_server_start
sudo setfacl -m g:jobq:x /usr/local/sbin/jobq_status
sudo setfacl -m g:jobq:x /usr/local/sbin/jobq_stop

sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_submit
sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_server
sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_server_stop
sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_server_start
sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_status
sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_stop
sudo setfacl -x g:jobq:rw /usr/local/sbin/jobq_submit

The lines with -m do not give an error message, but the lines with -x say

setfacl: Option -x: Invalid argument near character 8

What is wrong here?