Remove explicit user agent definition (#63019)

pkg/tsdb/influxdb/influxdb.go

@@ -179,8 +179,6 @@ func (s *Service) createRequest(ctx context.Context, logger log.Logger, dsInfo *
 		return nil, ErrInvalidHttpMode
 	}
 
-	req.Header.Set("User-Agent", "Grafana")
-
 	params := req.URL.Query()
 	params.Set("db", dsInfo.DbName)
 	params.Set("epoch", "ms")