datasource as cfg: setting for purging datasources not in cfg

pkg/cmd/grafana-server/server.go

@@ -56,7 +56,7 @@ func (g *GrafanaServerImpl) Start() {
 	g.writePIDFile()
 
 	initSql()
-	err, _ := dsSettings.Init(filepath.Join(setting.HomePath, "conf/datasources.yaml"))
+	err := dsSettings.Init(filepath.Join(setting.HomePath, "conf/datasources.yaml"))
 	if err != nil {
 		g.log.Error("Failed to load datasources from config", "error", err)
 		g.Shutdown(1, "Startup failed")