uclibc: remove 0.9.33 version

The upstream project is dead, the 0.9.33 version requires tons of
patches, and uclibc-ng has now successfully replaced uclibc. It is
time to get rid of the 0.9.33 version.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>