This reverts r15599 [0].
This was added to fix an uclibc rebuild issue, but since uclibc
isn't supported anymore [Fixes:] this can be removed.
[0] https://git.openwrt.org/?p=openwrt/svn-archive/archive.git;a=commitdiff;h=016a052efeee6bc2da3f501a8c66b5aea20350b4
Fixes: 63fb1752 "toolchain: remove uClibc-ng"
Signed-off-by: Andre Heider <a.heider@gmail.com>