tui: remove legacy V1 CLI TUI integration to simplify startup

packages/opencode/src/plugin/tui/runtime.ts

@@ -42,7 +42,7 @@ import { ConfigPluginV1 } from "@opencode-ai/core/v1/config/plugin"
 import { createCommandShim } from "@opencode-ai/tui/plugin/command-shim"
 import { RuntimeFlags } from "@/effect/runtime-flags"
 import { Effect } from "effect"
-import { createPluginRuntime, type PluginRuntime, type TuiPluginHost } from "@opencode-ai/tui/plugin/runtime"
+import { createPluginRuntime, type PluginRuntime } from "@opencode-ai/tui/plugin/runtime"
 
 ensureRuntimePluginSupport({ additional: keymapRuntimeModules })
 
@@ -1121,11 +1121,4 @@ async function load(input: {
   }
 }
 
-export function createLegacyTuiPluginHost(): TuiPluginHost {
-  return {
-    start: init,
-    dispose,
-  }
-}
-
 export * as TuiPluginRuntime from "./runtime"