input: Write a function to clean up a list of emails and put them into a new list by removing any text after a '+' sign and any '.uk' suffix. If the given list is empty, return an empty list.
  assert remove_plus_and_uk(['bob@example.com', 'alice+bob@cafe.com', 'bob@gmail.com.uk', 'bob+alice@example'])==['bob@example.com', 'alice@cafe.com', 'bob@gmail.com', 'bob@example']
  assert remove_plus_and_uk([])==[]
output: def remove_plus_and_uk(emails):
      cleaned_emails = []
      for email in emails:
          if '+' in email:
              email = email.split('+')[0]
          if '.uk' in email:
              email = email.split('.uk')[0]
          cleaned_emails.append(email)
      return cleaned_emails