input: Write a function to remove all punctuations from a given string of sentences. If the string is empty then return an empty string.
  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("") == ""
  assert remove_punctuations("Hello, World!") == "Hello World"
  assert remove_punctuations("Python = Best!"") == "Python  Best""
output: def remove_punctuations(s):
      return s.translate(str.maketrans('', '', string.punctuation))