Use nuget packages again

Author: peppy

osu.Game/osu.Game.csproj

@@ -15,13 +15,11 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.2.1" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="2.2.1" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
+    <PackageReference Include="ppy.osu.Framework" Version="2019.205.0" />
     <PackageReference Include="ppy.osu.Game.Resources" Version="2019.128.0" />
     <PackageReference Include="SharpCompress" Version="0.22.0" />
     <PackageReference Include="NUnit" Version="3.11.0" />
     <PackageReference Include="SharpRaven" Version="2.4.0" />
     <PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />
   </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\..\osu-framework\osu.Framework\osu.Framework.csproj" />
-  </ItemGroup>
 </Project>

osu.sln

@@ -29,10 +29,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "osu.Game.Tournament", "osu.
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "osu.Game.Tournament.Tests", "osu.Game.Tournament.Tests\osu.Game.Tournament.Tests.csproj", "{5789E78D-38F9-4072-AB7B-978F34B2C17F}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "osu.Framework", "..\osu-framework\osu.Framework\osu.Framework.csproj", "{7A69A230-45A1-4444-8C43-A582E4F48C1E}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "osu.Framework.NativeLibs", "..\osu-framework\osu.Framework.NativeLibs\osu.Framework.NativeLibs.csproj", "{C3ECD150-D109-453F-9625-518B282CF745}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -91,14 +87,6 @@ Global
 		{5789E78D-38F9-4072-AB7B-978F34B2C17F}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{5789E78D-38F9-4072-AB7B-978F34B2C17F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{5789E78D-38F9-4072-AB7B-978F34B2C17F}.Release|Any CPU.Build.0 = Release|Any CPU
-		{7A69A230-45A1-4444-8C43-A582E4F48C1E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{7A69A230-45A1-4444-8C43-A582E4F48C1E}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{7A69A230-45A1-4444-8C43-A582E4F48C1E}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{7A69A230-45A1-4444-8C43-A582E4F48C1E}.Release|Any CPU.Build.0 = Release|Any CPU
-		{C3ECD150-D109-453F-9625-518B282CF745}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{C3ECD150-D109-453F-9625-518B282CF745}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{C3ECD150-D109-453F-9625-518B282CF745}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{C3ECD150-D109-453F-9625-518B282CF745}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE