uclibc: remove unused patch

Since commit c31d5bfd (uclibc: arc: bump to arc-4.8-R3 release) uClibc
version f37101d94284 is no longer used for ARC. Remove a version specific
patch.

Cc: Anton Kolesov <Anton.Kolesov@synopsys.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>