Remove instance logic for BinaryStorage and JsonStorage, part 2

1. part of #389
2. file rename
3. fixup

Plugins/Wox.Plugin.Folder/Settings.cs

@@ -8,6 +8,5 @@ namespace Wox.Plugin.Folder
     {
         [JsonProperty]
         public List<FolderLink> FolderLinks { get; set; }
-
     }
 }

Plugins/Wox.Plugin.Folder/Wox.Plugin.Folder.csproj

@@ -59,7 +59,7 @@
     <Compile Include="FolderPluginSettings.xaml.cs">
       <DependentUpon>FolderPluginSettings.xaml</DependentUpon>
     </Compile>
-    <Compile Include="FolderStorage.cs" />
+    <Compile Include="Settings.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>