Get rid of spurious <ItemGroup>

Author: jstedfast

Xamarin.MacDev/Xamarin.MacDev.csproj

@@ -32,7 +32,6 @@
     <ConsolePause>false</ConsolePause>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
-  <ItemGroup>
   <ItemGroup>
     <FilesToSign Include="$(OutDir)\$(AssemblyName).dll">
       <Authenticode>Microsoft</Authenticode>