fix config.go

Author: msanlli

backend/cmd/config.go

@@ -1,13 +1,11 @@
 package main
 
 import (
-	"github.com/HyperloopUPV-H8/h9-backend/internal/excel_adapter"
 	"github.com/HyperloopUPV-H8/h9-backend/internal/server"
 	"github.com/HyperloopUPV-H8/h9-backend/internal/vehicle"
 )
 
 type Config struct {
-	Excel   excel_adapter.ExcelAdapterConfig
 	Vehicle vehicle.Config
 	Server  server.Config
 }