removed duplicate organ_type_dict assignments

src/app.py

@@ -2725,7 +2725,6 @@ def get_prov_info():
 
     # Parsing the organ types yaml has to be done here rather than calling schema.schema_triggers.get_organ_description
     # because that would require using a urllib request for each dataset
-    organ_types_dict = schema_manager.get_organ_types()
 
     # As above, we parse te assay type yaml here rather than calling the special method for it because this avoids
     # having to access the resource for every dataset.
@@ -3074,7 +3073,6 @@ def get_prov_info_for_dataset(id):
 
     # Parsing the organ types yaml has to be done here rather than calling schema.schema_triggers.get_organ_description
     # because that would require using a urllib request for each dataset
-    organ_types_dict = schema_manager.get_organ_types()
 
     # As above, we parse te assay type yaml here rather than calling the special method for it because this avoids
     # having to access the resource for every dataset.