fix: remove duplicate litPlugin import

Author: shakkernerd

agent/src/index.ts

@@ -136,7 +136,6 @@ import { holdstationPlugin } from "@elizaos/plugin-holdstation";
 import { nvidiaNimPlugin } from "@elizaos/plugin-nvidia-nim";
 import { zxPlugin } from "@elizaos/plugin-0x";
 import { hyperbolicPlugin } from "@elizaos/plugin-hyperbolic";
-import { litPlugin } from "@elizaos/plugin-lit";
 import Database from "better-sqlite3";
 import fs from "fs";
 import net from "net";