Drop B0Field fields from fmaps.

Author: tsalo

sdcflows/utils/wrangler.py

@@ -329,9 +329,9 @@ def find_estimators(
     ...     bids_filters={'session': '2'},
     ... )  # doctest: +ELLIPSIS
     [FieldmapEstimation(sources=<2 files>, method=<EstimatorType.PEPOLAR: 2>,
-                        bids_id='sub_04_ses_2_DCAN_fmap_acq_MEGE'),
+                        bids_id='auto_...'),
     FieldmapEstimation(sources=<2 files>, method=<EstimatorType.PEPOLAR: 2>,
-                       bids_id='sub_04_ses_2_DCAN_fmap_acq_MESE'),
+                       bids_id='auto_...'),
     FieldmapEstimation(sources=<10 files>, method=<EstimatorType.MEDIC: 6>,
                        bids_id='auto_...')]
     """