code: func (dict *Dictionary) Remove(word string) (wasRemoved bool) {
  	lastPos := len(word) - 1
  	parent := dict.root.Navigate(word[:lastPos])
  	if parent == nil {
  		return
  	}
  
  	lastLetter := rune(word[lastPos])
  
  	subject, ok := parent.Children[lastLetter]
  	if !ok {
  		return
  	}
  
  	wasRemoved = subject.IsWord
  
  	if wasRemoved {
  		dict.size--
  	}
  
  	subject.IsWord = false
  	if subject.Population() == 0 {
  		delete(parent.Children, lastLetter)
  	}
  	return
  }
docs: // Remove ensures that `word` is not in the Dictionary. Returns whether or not an item was removed.
  //
  // Time complexity: O(m) where 'm' is the length of word.