Deleted 6 old and low rated notes

Following were the 6 notes with a rating less than -5 and
are older than 1 year.

These notes represented 0.0% of the 16040 total user notes,
and have now been removed.

Rating | Note
-------+---------------------------------------------------------
   -6  | https://php.net/manual/en/ref.uodbc.php#77433
   -6  | https://php.net/manual/en/book.array.php#121988
   -6  | https://php.net/manual/en/ref.uodbc.php#70317
   -6  | https://php.net/manual/en/function.str-pad.php#125070
   -6  | https://php.net/manual/en/simplexmlelement.getnamespaces.php#113557
   -6  | https://php.net/manual/en/ref.uodbc.php#58678