remove auth disabled support (#1013)

packages/website/src/i18n/en.ts

@@ -133,7 +133,6 @@ export default {
       envVars: {
         title: 'Environment Variables',
         rows: [
-          ['AUTH_DISABLED', 'Set to "1" to disable authentication'],
           ['AUTH_TOKEN', 'Custom auth token (overrides auto-generated)'],
           ['PORT', 'Server listen port (default: 8648)'],
           ['BIND_HOST', 'Server bind host (default: 0.0.0.0). Set :: explicitly to enable IPv6 listening.'],

packages/website/src/i18n/zh.ts

@@ -133,7 +133,6 @@ export default {
       envVars: {
         title: '环境变量',
         rows: [
-          ['AUTH_DISABLED', '设为 "1" 禁用认证'],
           ['AUTH_TOKEN', '自定义认证令牌（覆盖自动生成的令牌）'],
           ['PORT', '服务器监听端口（默认：8648）'],
           ['BIND_HOST', '服务器绑定地址（默认：0.0.0.0）。如需 IPv6，请显式设置为 ::。'],