Revert "This was not supposed to go to the pull request.."

This reverts commit 0cc700a.

Author: kasbohm

heudiconv/dicoms.py

@@ -99,11 +99,11 @@ def group_dicoms_into_seqinfos(files, file_filter, dcmfilter, grouping):
                 # verify that we are working with a single study
                 if studyUID is None:
                     studyUID = file_studyUID
-                elif not per_accession_number:
-                    assert studyUID == file_studyUID, (
-                    "Conflicting study identifiers found [{}, {}].".format(
-                    studyUID, file_studyUID
-                    ))
+#                elif not per_accession_number:
+#                    assert studyUID == file_studyUID, (
+#                    "Conflicting study identifiers found [{}, {}].".format(
+#                    studyUID, file_studyUID
+#                    ))
         except AttributeError as exc:
             lgr.warning('Ignoring %s since not quite a "normal" DICOM: %s',
                         filename, exc)