Staging: TIDSPBRIDGE: Remove UUID helper

Custom uuid helper function is needed only in rmgr/dbdcd.c and doesn't
need to be exported. It can also be made way simpler by using sscanf.

Signed-off-by: Ivaylo Dimitrov <freemangordon@abv.bg>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>