@Override
	public void removeMnemonicReference(Address refAddr) {
		if (refMgr == null)
			throw new UnsupportedOperationException();
		Reference ref = refMgr.getReference(address, refAddr, MNEMONIC);
		if (ref != null) {
			refMgr.delete(ref);
		}
	}
Remove a reference to the mnemonic for this instruction.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/util/PseudoCodeUnit.java