Deleted 7 old and low rated notes

Following were the 7 notes with a rating less than -5 and
are older than 1 year.

These notes represented 0.0% of the 17441 total user notes,
and have now been removed.

Rating | Note
-------+---------------------------------------------------------
   -6  | https://php.net/manual/en/json.installation.php#115281
   -6  | https://php.net/manual/en/function.array-sum.php#128599
   -6  | https://php.net/manual/en/class.dateinterval.php#124954
   -6  | https://php.net/manual/en/function.socket-write.php#102249
   -6  | https://php.net/manual/en/function.html-entity-decode.php#51055
   -6  | https://php.net/manual/en/install.fpm.configuration.php#114193
   -6  | https://php.net/manual/en/language.enumerations.overview.php#128380