protected boolean removeMechanismPayload(String nm) {
		InjectPayload payload = callMechFixupMap.remove(nm);
		return (payload != null);
	}
Remove a specific call mechanism payload.
@param nm is the name of the payload
@return true if a payload was successfully removed
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/PcodeInjectLibrary.java