Always show default option in spatial reference select field

ckanext/odsh/helpers.py

@@ -731,11 +731,8 @@ def get_spatial_for_selection():
         spatial_mapping = list(cr)
 
     unique_mapping = []
-    require_spatial_uri = toolkit.asbool(
-        toolkit.config.get('ckanext.odsh.require_spatial_uri', False)
-    )
-    if not require_spatial_uri:
-        unique_mapping.append({'value': toolkit._('Select spatial reference..'), 'key': ''})
+
+    unique_mapping.append({'value': toolkit._('Select spatial reference..'), 'key': ''})
     seen_values = set()
     for key, value, _ in spatial_mapping:
         if value in seen_values: