remove net5.0 targetted ones

Author: smdn

doc/api-list/Smdn.Reflection.ReverseGenerating.ListApi.Core/Smdn.Reflection.ReverseGenerating.ListApi.Core-net5.0.apilist.cs

@@ -28,7 +28,6 @@ SPDX-License-Identifier: MIT
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Reflection.MetadataLoadContext" Version="5.0.1" Condition="$(TargetFramework.StartsWith('net5.'))" />
     <PackageReference Include="System.Reflection.MetadataLoadContext" Version="6.0.0" Condition="$(TargetFramework.StartsWith('net7.')) Or $(TargetFramework.StartsWith('net6.')) Or $(TargetFramework.StartsWith('netcoreapp'))" />
     <!--
     <PackageReference Include="System.Reflection.MetadataLoadContext" Version="6.0.0" Condition="$(TargetFramework.StartsWith('netcoreapp'))" />