Revert "uClibc: port linuxthreads errno patch to 0.9.33.2"

This reverts commit 1d8c3e6

The forward port breaks compilation at least for SPARC NPTL toolchains:

LD libuClibc-0.9.33.2.so
libc/libc_so.a(pipe.os): In function `__GI_pipe':
(.text+0x38): undefined reference to `__GI___errno_location'
collect2: ld returned 1 exit status

Easily triggered by a "make qemu_sparc_ss10_defconfig && make".

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>