staging: otus: remove unused methods
staging: otus: remove unused methods

This is rebased version of the patch [1] which was mysteriously not
pushed anywhere but acked.

Here are two methods to convert hex value to binary format. These
certain methods aren't used anywhere in kernel.

[1] http://lkml.org/lkml/2010/2/18/267

Signed-off-by: Andy Shevchenko <e11a926d64056a9601d8b64a4b8e158f9732e628@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@suse.de>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs