Remove duplicate entry for DependentFileCheckingTests.fs (#1048)

Author: nojaf

test/FsAutoComplete.Tests.Lsp/FsAutoComplete.Tests.Lsp.fsproj

@@ -34,7 +34,6 @@
     <Compile Include="CodeFixTests/Utils.fs" />
     <Compile Include="CodeFixTests/*.fs" Exclude="CodeFixTests/Utils.fs;CodeFixTests/Tests.fs" />
     <Compile Include="CodeFixTests/Tests.fs" />
-    <Compile Include="DependentFileCheckingTests.fs" />
     <Compile Include="Program.fs" />
   </ItemGroup>
   <Import Project="..\..\.paket\Paket.Restore.targets" />