staging: vc04_services: fix unused-but-set-variable warning

staging: vc04_services: fix unused-but-set-variable warning

Fix gcc used-but-set-variable warning:

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c: In function vchiq_release_internal:
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:2827:16: warning:
 variable local_entity_uc set but not used [-Wunused-but-set-variable]
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:2827:6: warning:
 variable local_uc set but not used [-Wunused-but-set-variable]

Remove the unused variables 'local_entity_uc' and 'local_uc'

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20190727013524.33168-1-yuehaibing@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>