input: def remove_whitespace(word_list: List[str]) -> List[str]:
      """
      Given a list of strings, remove all the whitespaces from each string.
  
      >>> remove_whitespace(['Hello  World  ', 'Hi  there', 'Good  Morning'])
      ['HelloWorld', 'Hithere', 'GoodMorning']
      """
output:     return [''.join(char for char in word if char != ' ') for word in word_list]