input: Write a python function to remove punctuation from a sentence.
  assert removePunctuations("Hello, world!") == "Hello world"
  assert removePunctuations("Good morning!!!") == "Good morning"
  assert removePunctuations("Yes? No.") == "Yes No"
output: def removePunctuations(sentence):
      import string
      return sentence.translate(str.maketrans('', '', string.punctuation))