input: Write a function to remove all punctuations from a given string of sentences. If the input string is empty, return an empty string.
  import string
  
  def remove_punctuations(s):
      if s == "":
          return ""
      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("No punctuations here.")=="No punctuations here"
  assert remove_punctuations("")==""
  assert remove_punctuations("Multiple, punctuations!: Like this.")=="Multiple punctuations Like this"
output: def remove_punctuations(s):
      if s == "":
          return ""
      return s.translate(str.maketrans('', '', string.punctuation))