package/util-linux: remove patch for uClibc support

package/util-linux: remove patch for uClibc support

This patch is not needed anymore since the uClibc support has been removed from
Buildroot. This patch was needed for uClibc <= 0.9.33 support.

The only remaining supported external toolchain using uClibc 0.9.33 is the
2014R1 bfin toolchain. But all features that needs mkostemp() require fork() [1].
So, we can safely remove the patch.

[1] http://lists.busybox.net/pipermail/buildroot/2016-February/153414.html

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>