(chore) removed the chains endpoint, was used for testing

Author: Kannav02

backend/src/api/main.py

@@ -1,8 +1,7 @@
 from fastapi import FastAPI
-from .routers import graphs, healthcheck,chains
+from .routers import graphs, healthcheck
 
 app = FastAPI()
 
 app.include_router(healthcheck.router)
 app.include_router(graphs.router)
-app.include_router(chains.router)