Merge branch '38-fix-double-return-in-phen' into 'dev'

fix: double return in omop. Closes  #38

Closes #38

See merge request meldb/concepts-processing!15

acmc/omop.py

@@ -317,5 +317,3 @@ def export(map_path, export_path, version, omop_metadata):
     logger.debug(f"Created export db successfully")
 
     return export_db_path
-
-    return export_db_path