MM-26055 Remove session requirement from command args. (#14880)

* Remove session requirement from command args.

* Removing unused server side translation.

* Restoring model.CommandArgs.Session for compatibility.

* Feedback fixes.

* Build fix

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/command_logout.go

@@ -34,15 +34,6 @@ func (me *LogoutProvider) GetCommand(a *App, T goi18n.TranslateFunc) *model.Comm
 }
 
 func (me *LogoutProvider) DoCommand(a *App, args *model.CommandArgs, message string) *model.CommandResponse {
-	FAIL := &model.CommandResponse{ResponseType: model.COMMAND_RESPONSE_TYPE_EPHEMERAL, Text: args.T("api.command_logout.fail_message")}
-	SUCCESS := &model.CommandResponse{GotoLocation: "/login"}
-
-	// We can't actually remove the user's cookie from here so we just dump their session and let the browser figure it out
-	if args.Session.Id != "" {
-		if err := a.RevokeSessionById(args.Session.Id); err != nil {
-			return FAIL
-		}
-		return SUCCESS
-	}
-	return FAIL
+	// Actual logout is handled client side.
+	return &model.CommandResponse{GotoLocation: "/login"}
 }