remove stale js code that throws errors after bootstrap upgrade

the actual tab switching happens elsewhere now anyway

www/maposmatic/templates/maposmatic/wizard-parts/verify-json-file.js

@@ -38,8 +38,6 @@ function verify_geojson_data(json_data, filename, filenum)
 	return false;
     }
 
-    $('#step-location-bbox').tab('show') // Select geo location tab
-
     return json_layer;
 }
 
@@ -80,7 +78,6 @@ function verify_umap_json_data(json_data, filename, filenum)
 	return false;
     }
 
-    $('#step-location-bbox').tab('show') // Select geo location tab
     json_layer.maptitle = json_data.properties.name;
 
     try {