wifi: clean up erroneously introduced file

Evidently Gregory sent this file but I (apparently every else) missed
it entirely, remove that.

Fixes: cf85123a ("wifi: iwlwifi: mvm: support enabling and disabling HW timestamping")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

intc-scripts/chromeOS/adjustments/024-time-sync.spatch

-@@
-struct ieee80211_hw *hw;
-expression val;
-@@
--hw->wiphy->hw_timestamp_max_peers = val
-+hw_timestamp_max_peers(hw)