Fixed extra endregion directive that prevented compilation.

Fixed some warnings about csproj files.

Source/Bind/Generator.Bind.csproj

@@ -1036,7 +1036,6 @@
       <SubType>Designer</SubType>
     </None>
   </ItemGroup>
-  <Import Project="$(MSBuildBinPath)\Microsoft.CSHARP.Targets" />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>

Source/Build.UpdateVersion/Build.UpdateVersion.csproj

@@ -38,7 +38,6 @@
     <Reference Include="System" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.Targets" />
-  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>
     </PreBuildEvent>

Source/Converter/Generator.Convert.csproj

@@ -162,7 +162,6 @@
     <None Include="Readme.txt">
     </None>
   </ItemGroup>
-  <Import Project="$(MSBuildBinPath)\Microsoft.CSHARP.Targets" />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>

Source/OpenTK/Math/Vector3.cs

@@ -348,8 +348,6 @@ namespace OpenTK
 
         #endregion
 
-        #endregion
-
         #region Static
 
         #region Fields