input: Write a python function to remove all punctuation from a string.
  assert remove_punctuation("Hello, world!") == "Hello world"
  assert remove_punctuation("Good morning! How are you?") == "Good morning How are you"
  assert remove_punctuation("Python's syntax is simple.") == "Pythons syntax is simple"
output: def remove_punctuation(s):
      import string
      return s.translate(str.maketrans('', '', string.punctuation))