Variable pending_idx is not effectively used in the function, so delete
it.
drivers/net/xen-netback/netback.c:886:7: warning: variable ‘pending_idx’ set but not used.
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3399
Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>