refactor(plan):移除套餐相关的所有修改

internal/cmd/cmd.go

@@ -164,9 +164,6 @@ var (
 				billing.CleanExpiredPreDeducts(ctx)
 				return nil
 			})
-			cs.Register("plan_expiration_check", "0 * * * *", func(ctx context.Context) error {
-				return task.CheckPlanExpirations(ctx)
-			})
 			cs.StartBackground(ctx)
 
 			// Initialize plugin system (must be after CronScheduler init)