qcacld-3.0: Remove lim_populate_p2p_mac_header()

Change I64d0b71853004679ae694bcd6ca7a2f2347adc84 ("qcacld-3.0:
Remove legacy P2P codes in MAC") removed the last client of
lim_populate_p2p_mac_header(). Since this function is now
obsolete, remove it.

Change-Id: I3adb55dcf3eb3b14c6f7d6a82e686f13c3d955a1
CRs-Fixed: 2371092
2 files changed