be2net: Remove unused declarations

Commit 6b7c5b94 ("net: Add be2net driver.") declared be_pci_fnum_get()
and be_cmd_reset() but never implemented. And commit 9fa465c0 ("be2net:
remove code duplication relating to Lancer reset sequence") removed
lancer_test_and_set_rdy_state() but leave declaration.

Commit 76a9e08e ("be2net: cleanup wake-on-lan code") left behind
be_is_wol_supported() declaration.
Commit baaa08d1 ("be2net: do not call be_set/get_fw_log_level() on
Skyhawk-R") removed be_get_fw_log_level() but leave declaration.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240902113238.557515-1-yuehaibing@huawei.com


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