rbd: fix coding style and compilation error
This fixes a compilation error due to a mismerge in commit
It also fixes the coding style to use tabs instead of spaces in the
rbd_aio_cb definition so it matches what was added in that commit.
@@ -951,8 +951,6 @@ static void rbd_finish_aio_generic(rbd_completion_t completion,
uint16_t asc_ascq;
int64_t ret;
int tcmu_r;
- struct iovec *iovec;
- size_t iov_cnt;
ret = rbd_aio_get_return_value(completion);
rbd_aio_release(completion);
