Disabled NuGet packaging.

Author: hozuki

appveyor.yml

@@ -21,7 +21,7 @@ before_build:
   - ps: .\scripts\install_monogame.ps1
 build_script:
   - cmd: msbuild MilliSim.sln /p:Configuration=Release /verbosity:minimal /p:nowarn="1574,1591"
-  - cmd: node scripts\appveyor_nuget_pack.js
+  #- cmd: node scripts\appveyor_nuget_pack.js
 after_build:
   - cmd: marked ./README.md -o ./README.html
   - cmd: node scripts\appveyor_copy_licenses.js