iwlwifi: mvm: don't WARN if we can't remove a time event

It is not very useful to WARN if we can't send a host command
The firmware is likely in a bad situation and the fact that
we didn't send the host command has an impact on the firmware
only, not on the driver. The driver could clean up all its
state.

Don't WARN in this case, but just leave a smaller note.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210411132130.0324abc169c8.I4f9b769bc38d68f8ed43f77d2cd75e8f1993e964@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/time-event.c

@@ -734,8 +734,8 @@ void iwl_mvm_remove_time_event(struct iwl_mvm *mvm,
 	IWL_DEBUG_TE(mvm, "Removing TE 0x%x\n", le32_to_cpu(time_cmd.id));
 	ret = iwl_mvm_send_cmd_pdu(mvm, TIME_EVENT_CMD, 0,
 				   sizeof(time_cmd), &time_cmd);
-	if (WARN_ON(ret))
-		return;
+	if (ret)
+		IWL_ERR(mvm, "Couldn't remove the time event\n");
 }
 
 /*