Don't need to include dependent packages.

Author: grokys

src/GitHub.App/GitHub.App.csproj

@@ -60,12 +60,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
     <PackageReference Include="Octokit.GraphQL" Version="0.0.4-alpha" />
     <PackageReference Include="Rothko" Version="0.0.3-ghfvs" />
-    <PackageReference Include="Rx-Core" Version="2.2.5-custom" targetFramework="net45" />
-    <PackageReference Include="Rx-Interfaces" Version="2.2.5-custom" targetFramework="net45" />
-    <PackageReference Include="Rx-Linq" Version="2.2.5-custom" targetFramework="net45" />
     <PackageReference Include="Rx-Main" Version="2.2.5-custom" targetFramework="net45" />
-    <PackageReference Include="Rx-PlatformServices" Version="2.2.5-custom" targetFramework="net45" />
-    <PackageReference Include="Rx-XAML" Version="2.2.5-custom" targetFramework="net45" />
     <PackageReference Include="Serilog" Version="2.5.0" />
     <PackageReference Include="SerilogAnalyzer" Version="0.12.0.0" />
     <PackageReference Include="SQLitePCL.raw_basic" Version="0.7.3.0-vs2012" targetFramework="net45" />