qcacld-3.0: Remove wlan_hdd_roc_request_dequeue() prototype

Previously change Idaaacac4fdaf1b964432c33c10b1c86f8a591c2d
("qcacld-3.0: Remove legacy P2P codes in HDD") removed function
wlan_hdd_roc_request_dequeue() but did not remove the prototype, so
remove it now.

Change-Id: Ic2eb217b3974b274e890c1c556eece9e688463b4
CRs-Fixed: 2362719
1 file changed