Anyways, to get you off my back.
Quote:
Cases where an apostrophe is no longer necessary
Many short words originate from longer words, for example photo (from photograph), keeper (from goalkeeper). Until recent years, it was common practice to write photo' or 'keeper; however, the shortened words have been adopted as words in their own right and it is not necessary to use apostrophes to acknowledge the longer form.
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link:
http://www.apostrophes.info/words-and-phrases.php