Given the following array of strings, write a Python code snippet to remove all punctuation marks.
['hello!', 'hey,', 'where, are, you?', 'I am here']
strings = ['hello!', 'hey,', 'where, are, you?', 'I am here']
strings = [s.replace(",", "").replace("?", "").replace("!", "") for s in strings]
print(strings)