Update nuspec and package script

Author: bording

nuget.package/BuildNugetPackage.ps1

@@ -70,9 +70,7 @@ try {
   Set-Content -Encoding ASCII $(Join-Path $projectPath "libgit2sharp_hash.txt") $commitSha
   Run-Command { & "$(Join-Path $projectPath "..\Lib\NuGet\Nuget.exe")" Restore "$(Join-Path $projectPath "..\LibGit2Sharp.sln")" }
 
-  # Cf. https://stackoverflow.com/questions/21728450/nuget-exclude-files-from-symbols-package-in-nuspec
-  Run-Command { & "$(Join-Path $projectPath "..\Lib\NuGet\Nuget.exe")" Pack -Build -Symbols "$(Join-Path $projectPath "LibGit2Sharp.csproj")" -Prop Configuration=Release -Exclude "**/NativeBinaries/**/*.*"}
-  Run-Command { & "$(Join-Path $projectPath "..\Lib\NuGet\Nuget.exe")" Pack "$(Join-Path $projectPath "LibGit2Sharp.csproj")" -Prop Configuration=Release }
+  Run-Command { & "$(Join-Path $projectPath "..\Lib\NuGet\Nuget.exe")" Pack -Build -Symbols "$(Join-Path $projectPath "LibGit2Sharp.csproj")" -Prop Configuration=Release}
 }
 finally {
   Pop-Location

nuget.package/LibGit2Sharp.nuspec

@@ -12,17 +12,10 @@
     <releaseNotes>https://github.com/libgit2/libgit2sharp/blob/master/CHANGES.md#libgit2sharp-changes</releaseNotes>
     <iconUrl>https://github.com/libgit2/libgit2sharp/raw/master/square-logo.png</iconUrl>
     <tags>libgit2 git wrapper bindings API dvcs vcs</tags>
-    <references>
-      <reference file="LibGit2Sharp.dll" />
-    </references>
   </metadata>
   <files>
-    <file src="..\Lib\NativeBinaries\**\*.dll" target="lib\net40\NativeBinaries" />
-    <file src="..\Lib\NativeBinaries\**\*.pdb" target="lib\net40\NativeBinaries" />
     <file src="..\README.md" target="App_Readme\LibGit2Sharp.README.md" />
     <file src="..\LICENSE.md" target="App_Readme\LibGit2Sharp.LICENSE.md" />
     <file src="..\CHANGES.md" target="App_Readme\LibGit2Sharp.CHANGES.md" />
-    <file src="..\nuget.package\build\*.*" target="build\net40" />
-    <file src="..\Lib\NativeBinaries\libgit2.license.txt" target="App_Readme" />
   </files>
 </package>