gve: Remove unused declaration gve_rx_alloc_rings()

Commit f13697cc ("gve: Switch to config-aware queue allocation")
convert this function to gve_rx_alloc_rings_gqi().

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240816101906.882743-1-yuehaibing@huawei.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>