Hi, if you do not use them they just sit there and do nothing.

I do not think that is possible as there are many functions of it that are installed and in about:config. It is possible would break Firefox by trying.

try: Type about:config into the address bar, press Enter, accept the warning, scroll down to devtools.scratchpad.enabled and double click on it to change 'Value' from True to False, then restart Firefox.