Updated csproj ref to file that should not compiler
MODIFY
src/Chapter20/Chapter20.csproj
src/Chapter20/Chapter20.csproj
</PropertyGroup>
<Import Project="..\Chapter.props" />
<ItemGroup>
- <Compile Remove="Listing20.07.SignaturesOfAsyncEnumerableSelectMethods.cs" />
+ <Compile Remove="Listing20.08.SignaturesOfAsyncEnumerableSelectMethods.cs" />
<Compile Remove="Listing20.13.SynchronousHighLatencyInvocationInWPF.cs" />
<Compile Remove="Listing20.14.SynchronousHighLatencyInvocationInWPF.cs" />
<Compile Remove="Listing20.14.SynchronousHighLatencyInvocationInWPFUsingAwait.cs" />

Updated csproj ref to file that should not compiler