input: Write a function to remove all punctuations from a given string of sentences.
  
  def remove_punctuations(s):
      return s.translate(str.maketrans('', '', string.punctuation))
  
  assert remove_punctuations("This is a sample string!")=="This is a sample string"
  assert remove_punctuations("Hello, World!")=="Hello World"
  assert remove_punctuations("What's up?")=="Whats up"
  assert remove_punctuations("123-456-7890")=="1234567890"
  assert remove_punctuations("")==""
output: def remove_punctuations(s):
      return s.translate(str.maketrans('', '', string.punctuation))