server: コマンドラインオプション廃止

Resolve #7863
Resolve #6337

src/server/index.ts

@@ -20,7 +20,7 @@ import config from '@/config/index';
 import apiServer from './api/index';
 import { sum } from '@/prelude/array';
 import Logger from '@/services/logger';
-import { program } from '../argv';
+import { envOption } from '../env';
 import { UserProfiles, Users } from '@/models/index';
 import { networkChart } from '@/services/chart/index';
 import { genAvatar } from '@/misc/gen-avatar';
@@ -40,7 +40,7 @@ if (!['production', 'test'].includes(process.env.NODE_ENV || '')) {
 	}));
 
 	// Delay
-	if (program.slow) {
+	if (envOption.slow) {
 		app.use(slow({
 			delay: 3000
 		}));