Cutting off metal anchor legs on an HDMI port or Metal connector? What to use?
You should be careful to have all the signal lines de-soldered before you try cutting the legs.  If you don't you can easily tear up the signal traces when cutting away the legs.  Use a small X-acto knife to lift up each leg of the signal lines while heating the connection with a soldering iron.  Once you have all the signal pins lifted away from the contacts you can then cut the metal support legs, often with just a good pair of small diagonal cutters as the metal on these connectors is not that hard.  I find that safer than using cutting wheels that can catch or break and end up damaging other areas of the PCB.  I often save a damaged pair of diagonal cutters for such jobs as sometimes you may mar the blades on the cutters.  If you have a nice pair of cutters and don't want to risk them, go buy a cheap pair for doing jobs like this.  Once you have the legs cut you should be able to heat them up individually and pluck them from the holes.