Refactor delete-interest API to return service result directly

Remove custom response wrapping and return deleteInterest result directly
instead of manually creating success response object.

server/api/delete-interest.ts

@@ -1,5 +1,3 @@
-import { deleteInterest } from "~/server/utils/nocodb";
-
 export default defineEventHandler(async (event) => {
   const xTagHeader = getRequestHeader(event, "x-tag");
 
@@ -15,13 +13,8 @@ export default defineEventHandler(async (event) => {
       throw createError({ statusCode: 400, statusMessage: "ID is required" });
     }
 
-    // Delete the interest from NocoDB
-    await deleteInterest(id);
-    
-    return {
-      success: true,
-      message: "Interest deleted successfully",
-    };
+    const result = await deleteInterest(id);
+    return result;
   } catch (error) {
     if (error instanceof Error) {
       throw createError({ statusCode: 500, statusMessage: error.message });