public void unlink(PcodeOpAST op) {
		unSetOutput(op);
		for (int i = 0; i < op.getNumInputs(); ++i) {
			unSetInput(op, i);
		}
		if (op.getParent() != null) {
			unInsert(op);
		}
	}
return all PcodeOps associated with a particular instruction Address
@param addr -- Address of instruction generating PcodeOps
@return -- Iterator to PcodeOps
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/PcodeSyntaxTree.java