ghostscript: drop incorrectly applied patch

ghostscript: drop incorrectly applied patch

The patch was adding a change to the source file that was already there,
so the lines of code were repeated twice. This didn't create a bug or a
security issue, but it may well have.

Long story:
https://bugzilla.yoctoproject.org/show_bug.cgi?id=10450

(From OE-Core rev: 1fc1a5f392ec6773cd520cbbd19b58931c6a2d66)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>