Remove redundant import in sample

The build task’s targets will already be merged in the root level generated.targets

Author: Redth

vector-drawable/samples/VectorDrawableSample/VectorDrawableSample.csproj

@@ -102,7 +102,6 @@
     </ProjectReference>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
-  <Import Project="..\..\buildtask\bin\Release\Xamarin.Android.Support.Tasks.VectorDrawable.targets" />
   <Import Project="..\..\..\generated.targets" />
   <Import Project="..\packages\Xamarin.Build.Download.0.4.3\build\Xamarin.Build.Download.targets" Condition="Exists('..\packages\Xamarin.Build.Download.0.4.3\build\Xamarin.Build.Download.targets')" />
 </Project>