qcacld-3.0: Remove wma_update_fw_tdls_state() prototype
As part of change I5c873b9571228f0d2b4fcd4782267a2cc40fc20a
("qcacld-3.0: Remove the deprecated IOCTL in TDLS") the implementation
of wma_update_fw_tdls_state() was removed. However the prototype was
left behind, so remove it as well.
Change-Id: Ibb08e9f8c8c39eac364b05e72d7c03db306cc8b3
CRs-Fixed: 2379061