fix schedule column settings timezone

src/entity/schedule_series.ts

@@ -35,9 +35,6 @@ export class ScheduleSeries {
     @Column({ nullable: false, length: 256 })
     title: string;
 
-    @Column({ nullable: false, length: 64 })
-    timezone: string;
-
     @Column({ type: "date", nullable: false })
     start_date: Date;
 
@@ -45,10 +42,10 @@ export class ScheduleSeries {
     until_date: Date;
 
     @Column({ type: "time", nullable: false })
-    start_time_local: string;
+    start_time: string;
 
     @Column({ type: "time", nullable: false })
-    end_time_local: string;
+    end_time: string;
 
     @Column({ type: "int", nullable: true })
     quota: number;