remove backend tool from mastra example

Author: maxkorp

typescript-sdk/integrations/mastra/example/src/mastra/agents/tool-based-generative-ui.ts

@@ -11,21 +11,6 @@ export const toolBasedGenerativeUIAgent = new Agent({
       You are a helpful haiku assistant that provides the user with a haiku.
 `,
   model: openai("gpt-4o-mini"),
-  tools: {
-    generate_haiku: createTool({
-      id: "generate_haiku",
-      description:
-        "Generate a haiku in Japanese and its English translation. Also select exactly 3 relevant images from the provided list based on the haiku's theme.",
-      inputSchema: z.object({
-        japanese: z.array(z.string()).describe("An array of three lines of the haiku in Japanese"),
-        english: z.array(z.string()).describe("An array of three lines of the haiku in English"),
-      }),
-      outputSchema: z.string(),
-      execute: async ({ context }) => {
-        return "Haiku generated.";
-      },
-    }),
-  },
   memory: new Memory({
     storage: new LibSQLStore({
       url: "file:../mastra.db", // path is relative to the .mastra/output directory