So I’m reconfiguring a router, and just out of habit I typed this command, and got an interesting response:

Router-2911(config)#no voice-port 0/1/0:23
% Cannot remove voice-ports this way

Maybe it’s just my lack of sleep, but I found it humorous.  Almost like the line from Jurassic Park:

 

For the record, the only way to actually remove the configuration lines is to remove the hardware.  You can admin down the ports, however…