Deleted 4 old and low rated notes

Following were the 4 notes with a rating less than -5 and
are older than 1 year.

These notes represented 0.0% of the 15871 total user notes,
and have now been removed.

Rating | Note
-------+---------------------------------------------------------
   -6  | https://php.net/manual/en/curl.installation.php#118878
   -6  | https://php.net/manual/en/function.phpinfo.php#109122
   -6  | https://php.net/manual/en/function.get-resource-type.php#114153
   -6  | https://php.net/manual/en/sqlite3.escapestring.php#115802