[5.0] Remove stray language file

[GeraintEdwards]

Pull Request for Issue # .

Summary of Changes

Remove stray language file that was used to test guided tour identifiers and language files

Testing Instructions

None required

Actual result BEFORE applying this Pull Request

file administrator/languages/yoursites.site_check.ini is present

Expected result AFTER applying this Pull Request

file administrator/languages/yoursites.site_check.ini is no longer present

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

[richard67]

I have tested this item ✅ successfully on e0918eb

Code review.

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[obuisard]

I have tested this item ✅ successfully on e0918eb

Code review

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/41588.}

[richard67]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/41588.}