input: Write a function to remove all punctuations from a given string of sentences. Use a translation table to remove the punctuations. The function should return the cleaned string. 
  assert remove_punctuations("This is a sample string!")=="This is a sample string"
  assert remove_punctuations("Hello, World! It's a beautiful day.")== "Hello World Its a beautiful day"
  assert remove_punctuations("No punctuations here.")== "No punctuations here"
  assert remove_punctuations("What's the weather like today?")== "Whats the weather like today"
  assert remove_punctuations("")== ""
output: def remove_punctuations(s):
      import string
      translator = str.maketrans('', '', string.punctuation)
      return s.translate(translator)