wifi: iwlwifi: mvm: remove unneeded argument

iwl_mvm_set_key_rx_seq is called only once when the installed argument
is false. Remove this argument.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250709081300.2586112afd70.Iddf9a2b24546cb3a1506d68ca41ed215f88cff5c@changeid