VID-1778 Script to remove categories with same names as video from file ...

...pages
I believe they should all be in a format similar to the following, with at least [[Category:Video]] and a provider category (amongst others) sharing the same line:

[[Category:AMERICA'S GOT TALENT JUSTIN BIEBER]][[Category:America's Got Talent]][[Category:IVA]][[Category:Ooyala]][[Category:Videos]]
==Description==
Justin Bieber talks about Big Sean.

I just did a quick test by adding the following line during a dry run of the script:
if ( trim($contentMinusCategory) == ""  ) {
	$this->pages_only_category++;
}

and got the following summary following:

Done
4453 pages updated
0 pages skipped
0 pages_only_category

so I think we don't have to worry about that case for now.