chore(example): remove unused packages

Author: CocDap

examples/telegram-bot/src/TelegramBot.ts

@@ -1,17 +1,11 @@
 import { Telegraf } from "telegraf";
 import { setupHandlers } from "./handlers";
 import { PolkadotAgentKit } from "@polkadot-agent-kit/sdk";
-import {
-  getChainByName,
-  KnownChainId,
-  getAllSupportedChains,
-} from "@polkadot-agent-kit/common";
 import {
   ChatModelFactory,
   ChatModelOptions,
   ChatModelWithTools,
 } from "./models";
-import { BaseChatModel } from "@langchain/core/language_models/chat_models";
 
 interface BotConfig {
   botToken: string;

examples/telegram-bot/src/handlers.ts

@@ -1,6 +1,6 @@
 import { Telegraf } from "telegraf";
 import { HumanMessage, SystemMessage } from "@langchain/core/messages";
-import { DynamicStructuredTool, Tool } from "@langchain/core/tools";
+import { DynamicStructuredTool } from "@langchain/core/tools";
 import { ChatModelWithTools } from "./models";
 
 const SYSTEM_PROMPT = `I am a Telegram bot powered by PolkadotAgentKit. I can assist you with: