remove more files

Author: dsyme

src/fsharp/FSharp.Compiler.Service/FSharp.Compiler.Service.fsproj

@@ -191,12 +191,6 @@
     <Compile Include="..\lib.fs">
       <Link>Utilities/lib.fs</Link>
     </Compile>
-    <Compile Include="..\InternalFileSystemUtils.fsi">
-      <Link>Utilities/InternalFileSystemUtils.fsi</Link>
-    </Compile>
-    <Compile Include="..\InternalFileSystemUtils.fs">
-      <Link>Utilities/InternalFileSystemUtils.fs</Link>
-    </Compile>
     <Compile Include="..\TraceCall.fsi">
       <Link>Utilities/TraceCall.fsi</Link>
     </Compile>