input: Write a function to remove all punctuations from a given string of sentences. The function should return the string with all punctuations removed. If the input string is empty, return an empty string.
  assert remove_punctuations("This is a sample string!") == "This is a sample string"
  assert remove_punctuations("Hello, world!") == "Hello world"
  assert remove_punctuations("Python, is [an] awesome language!") == "Python is an awesome language"
  assert remove_punctuations("123!@# Test #@!") == "123 Test"
  assert remove_punctuations("") == ""
output: def remove_punctuations(s):
      import string
      return s.translate(str.maketrans('', '', string.punctuation))