Export/import widget: remove unneeded variable

Author: tomka

.travis.jshintexpected

@@ -60,8 +60,6 @@ django/applications/catmaid/static/js/widgets/clustering_widget.js: line 634, co
 django/applications/catmaid/static/js/widgets/clustering_widget.js: line 691, col 13, 'x' is defined but never used.
 django/applications/catmaid/static/js/widgets/clustering_widget.js: line 691, col 25, 'h' is defined but never used.
 
-django/applications/catmaid/static/js/widgets/import-export-widget.js: line 1596, col 11, 'result' is defined but never used.
-
 django/applications/catmaid/static/js/widgets/input.js: line 104, col 7, 'self' is defined but never used.
 django/applications/catmaid/static/js/widgets/input.js: line 5, col 10, 'Input' is defined but never used.
 
@@ -186,4 +184,4 @@ django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_worker.js: line 28
 django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_worker.js: line 57, col 43, 'use_cache' is defined but never used.
 django/applications/catmaid/static/libs/ngpre-wasm/ngpre_wasm_worker.js: line 57, col 54, '_' is defined but never used.
 
-144 errors
+143 errors

django/applications/catmaid/static/js/widgets/import-export-widget.js

@@ -1606,8 +1606,6 @@ annotations, neuron name, connectors or partner neurons.
 
     // Add handler for initiating the export
     dialog.onOK = function() {
-      // Collected objects for all skeletons
-      var result = {skeletons: {}};
       // Get all selected skeletons from the selected source
       var source = CATMAID.skeletonListSources.getSource($(select).val());
       var skids = source.getSelectedSkeletons();