refactor: remove unused import for populate_db and adjust main execution block

backend/app/main.py

@@ -1,10 +1,9 @@
+import uvicorn
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from backend.app.routes import search_route
 import logging
 
-from backend.app.scripts.populate_db import populate_db
-
 # Initialize FastAPI app
 app = FastAPI(title="LeetCode Vector Search API", version="1.0")
 
@@ -35,3 +34,7 @@ app.include_router(search_route.router, prefix="/api", tags=["Search"])
 
 # run initial population of the database only once then only run scraping
 # populate_db()
+
+if __name__ == "__main__":
+    uvicorn.run("backend.app.main:app", host="0.0.0.0",
+                port=7860, reload=False)