input: Write a function to remove all the whitespaces from each string in a given list of strings. The function should return a new list with each string stripped of whitespaces.
  assert remove_whitespace(['Hello  World  ', 'Hi  there', 'Good  Morning'])==['HelloWorld', 'Hithere', 'GoodMorning']
  assert remove_whitespace(['  Keep it clean  ', '  No spaces  ', '   Trimmed   '])==['Keepitclean', 'Nospaces', 'Trimmed']
  assert remove_whitespace([])==[]
  assert remove_whitespace(['SingleWord'])==['SingleWord']
  assert remove_whitespace([''])==['']
output: def remove_whitespace(strings):
      return [''.join(s.split()) for s in strings]