Fix attribute error of options.headless

[gaspardruan]

Env: windows11 + undetected-chromedriver 3.5.3 + selenium 4.13.0 + chrome 117
Problem: When running the given example in readme:

import undetected_chromedriver as uc

driver = uc.Chrome()
driver.get('https://nowsecure.nl')
driver.save_screenshot('nowsecure.png')

I've got:

driver = uc.Chrome()
             ^^^^^^^^^^^
File "C:\Users\Gaspard\anaconda3\envs\Scrapy\Lib\site-packages\undetected_chromedriver\__init__.py", line 398, in __init__
    if headless or options.headless:
                   ^^^^^^^^^^^^^^^^
AttributeError: 'ChromeOptions' object has no attribute 'headless'

Solution
Now that there is little difference between headless and options.headless, it's suggested to use headless only.

[nathan30]

Why not use getattr(options, 'headless', None) instead of removing the options.headless ?