input: Write a function named clean_emails that takes a list of emails as input and returns a new list of cleaned emails. The cleaning process involves removing any text after the '+' character and removing the '.uk' suffix if present. If the list is empty, return an empty list.
  assert clean_emails(['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 clean_emails([]) == []
output: def clean_emails(emails):
      cleaned_emails = []
      for email in emails:
          if '+' in email:
              email = email.split('+')[0]
          if '.uk' in email:
              email = email.replace('.uk', '')
          cleaned_emails.append(email)
      return cleaned_emails