uclibc: symlinks are now automatically created by uClibc-ng makefile

So the workaround can be dropped now that we've moved to uClibc-ng 1.0.6.

[Peter: Extend commit message]
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>