public int remove(int key) throws NoValueException {
    	int index = indexer.remove(key);
    	if (index < 0) {
            throw NoValueException.noValueException;
        }
    	return values[index];
    }
Removes a key/value from the hashtable
@param key the key to remove from the hashtable.
@return true if key is found and removed, false otherwise.
@throws NoValueException 
@exception NoValueException thrown if there is no value for the given key.
Ghidra/Framework/Generic/src/main/java/ghidra/util/datastruct/IntIntHashtable.java