code: public V remove (K key) {
  		int hashCode = key.hashCode();
  		int index = hashCode & mask;
  		if (key.equals(keyTable[index])) {
  			keyTable[index] = null;
  			V oldValue = valueTable[index];
  			valueTable[index] = null;
  			size--;
  			return oldValue;
  		}
  
  		index = hash2(hashCode);
  		if (key.equals(keyTable[index])) {
  			keyTable[index] = null;
  			V oldValue = valueTable[index];
  			valueTable[index] = null;
  			size--;
  			return oldValue;
  		}
  
  		index = hash3(hashCode);
  		if (key.equals(keyTable[index])) {
  			keyTable[index] = null;
  			V oldValue = valueTable[index];
  			valueTable[index] = null;
  			size--;
  			return oldValue;
  		}
  
  		if (bigTable) {
  			index = hash4(hashCode);
  			if (key.equals(keyTable[index])) {
  				keyTable[index] = null;
  				V oldValue = valueTable[index];
  				valueTable[index] = null;
  				size--;
  				return oldValue;
  			}
  		}
  
  		return removeStash(key);
  	}
docs: Returns the value associated with the key, or null.