Resolve "Data Race HTTP API"

Closes #87 (closed)

nucleus/controller.go

@@ -47,19 +47,8 @@ func initialize() error {
 	}
 
 	// TODO: Start grpc listener here
-	if err := httpAPI(); err != nil {
-		return err
-	}
-
-	attachDatabase()
-
-	return nil
-}
 
-// deprecated
-// attachDatabase connects to the database and passes the connection to the controller core
-func attachDatabase() {
-	c.database = database.NewDatabaseClient()
+	return httpAPI()
 }
 
 // createSouthboundInterfaces initializes the controller with its supported SBIs