Removing the barrel jack connector?
You'll likely do less damage de-soldering it than trying to snip it off. Use a de-soldering pump to remove as much molten solder as you can, then heat again with de-soldering braid to wick up the remainder. If the jack's solder terminals were bent over (to stabilize the part before it was soldered) you may need to straighten them with a tweezer-nosed plier. Then you should be able to lift the part off the board. Don't overheat the board or heat any other parts or solder joints than those you intend to remove.