tui: remove openrouter provider from priority list

packages/opencode/src/cli/cmd/tui/component/dialog-provider.tsx

@@ -17,7 +17,6 @@ const PROVIDER_PRIORITY: Record<string, number> = {
   "github-copilot": 2,
   openai: 3,
   google: 4,
-  openrouter: 5,
 }
 
 export function createDialogProviderOptions() {