input: Write a python function to remove duplicates from a list of strings and sort the result.
  assert remove_duplicates(["cat", "dog", "cat", "mouse", "lion", "dog"]) == ['cat', 'dog', 'lion', 'mouse']
  assert remove_duplicates(["apple", "banana", "apple", "cherry", "banana", "date"]) == ['apple', 'banana', 'cherry', 'date']
  assert remove_duplicates(["zebra", "elephant", "zebra", "tiger", "lion"]) == ['elephant', 'lion', 'tiger', 'zebra']
output: def remove_duplicates(lst):
      return sorted(set(lst))