Move AsyncExtras.fs content to ExceptionsHandler.fs

Author: Jamil Maqdis Anton

src/SqlStreamStore.FSharp.fsproj

@@ -11,7 +11,6 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <Compile Include="AsyncExtras.fs" />
         <Compile Include="ExceptionsHandler.fs" />
         <Compile Include="Types.fs" />
         <Compile Include="AppendRaw.fs" />