input: Write a python function to remove the longest string from a list of strings.
  assert remove_longest_string(["apple", "banana", "cherry", "date"]) == ["apple", "cherry", "date"]
  assert remove_longest_string(["one", "three", "five", "seven"]) == ["one", "five", "seven"]
  assert remove_longest_string(["hello", "world", "hi"]) == ["world", "hi"]
output: def remove_longest_string(strings):
      if not strings:
          return strings
      longest_string = max(strings, key=len)
      strings.remove(longest_string)
      return strings