Equity batch rows should really get deleted

and not just marked for such.  this is because in some cases equity
payments must be "merged" and therefore some must be deleted, which
requires there be no references to them e.g. in batches

rattail_corepos/batch/equityimport.py

@@ -38,6 +38,8 @@ class CoreEquityImportBatchHandler(BatchHandler):
     """
     batch_model_class = CoreEquityImportBatch
 
+    pseudo_remove_rows = False
+
     def refresh_row(self, row):
         session = self.app.get_session(row)
         model = self.model