UBIFS: Remove unused variables in ubifs_budget_space
UBIFS: Remove unused variables in ubifs_budget_space

I found two variables in ubifs_budget_space declared but not
use. This state remains since the first commit 1e5176. So just
remove them.

Signed-off-by: hujianyang <8cccc8a0252a9ef1c303b177e69000167d8d42b6@huawei.com>
Signed-off-by: Artem Bityutskiy <2f96f8cd3e2780a209d0ab27d1b44624d0019d3f@linux.intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs