input: Write a function to remove all punctuations from a string.
  assert remove_punctuations("Hello, world!") == "Hello world"
  assert remove_punctuations("It's a pleasure to meet you!!!") == "Its a pleasure to meet you"
  assert remove_punctuations("Good morning, Mr. Smith.") == "Good morning Mr Smith"
  assert remove_punctuations("No punctuations here") == "No punctuations here"
output: def remove_punctuations(s):
      import string
      return s.translate(str.maketrans('', '', string.punctuation))