worker: remove duplicated tests

worker/detectors/data.go

@@ -75,13 +75,6 @@ func DetectData(path string, format string, toExtract []string, maxFileSize int6
 			log.Warningf("could not download layer: %s", err)
 			return nil, cerrors.ErrCouldNotDownload
 		}
-		if math.Floor(float64(r.StatusCode/100)) != 2 {
-			log.Warningf("could not download layer: got status code %d, expected 2XX", r.StatusCode)
-			return nil, cerrors.ErrCouldNotDownload
-		}
-		if err != nil {
-			log.Warningf("could not download layer: %s", err)
-			return nil, cerrors.ErrCouldNotDownload
 		if r.StatusCode == 404 {
 			return nil, cerrors.ErrNotFound
 		}