Don't cancel on delay when no tags exist

Instead just show the error until explicitly cancelled so the behavior
when no tags is the same as the behavior when no tags match the
current filter.

src/packages/symbols-view/lib/symbols-view.coffee

@@ -46,13 +46,10 @@ class SymbolsView extends SelectList
     @setLoading("Generating symbols...")
     new TagGenerator(path).generate().done (tags) =>
       if tags.length > 0
-        @miniEditor.show()
         @maxItem = Infinity
         @setArray(tags)
       else
-        @miniEditor.hide()
         @setError("No symbols found")
-        setTimeout (=> @cancel()), 2000
 
   toggleProjectSymbols: ->
     if @hasParent()
@@ -72,7 +69,6 @@ class SymbolsView extends SelectList
       else
         @miniEditor.hide()
         @setError("No symbols found")
-        setTimeout (=> @cancel()), 2000
 
   confirmed : (tag) ->
     if tag.file and not fsUtils.isFile(project.resolve(tag.file))

src/packages/symbols-view/spec/symbols-view-spec.coffee

@@ -74,7 +74,7 @@ describe "SymbolsView", ->
         setErrorSpy.callCount > 0
 
       runs ->
-        expect(rootView.find('.symbols-view')).toExist()
+        expect(symbolsView).toExist()
         expect(symbolsView.list.children('li').length).toBe 0
         expect(symbolsView.error).toBeVisible()
         expect(symbolsView.error.text().length).toBeGreaterThan 0