As far as I aware, Soma related code no longer in this project.

And thus can be removed

Author: kant2002

benchmarks/Dapper.Tests.Performance/Dapper.Tests.Performance.csproj

@@ -37,7 +37,6 @@
   <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
     <ProjectReference Include="../../Dapper.EntityFramework/Dapper.EntityFramework.csproj" />
     <PackageReference Include="Microsoft.SqlServer.Types" Version="14.0.1016.290" />
-    <PackageReference Include="Soma" Version="1.9.0.1" />
     <PackageReference Include="SubSonic" Version="3.0.0.4" />
     <PackageReference Include="Susanoo.SqlServer" Version="1.2.4.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="[3.1.10]" />

benchmarks/Dapper.Tests.Performance/Post.cs

@@ -1,20 +1,11 @@
 using System;
-#if NET4X
-using Soma.Core;
-#endif
 
 namespace Dapper.Tests.Performance
 {
     [ServiceStack.DataAnnotations.Alias("Posts")]
-#if NET4X
-    [Table(Name = "Posts")]
-#endif
     [LinqToDB.Mapping.Table(Name = "Posts")]
     public class Post
     {
-#if NET4X
-        [Id(IdKind.Identity)]
-#endif
         [LinqToDB.Mapping.PrimaryKey, LinqToDB.Mapping.Identity]
         public int Id { get; set; }
         [LinqToDB.Mapping.Column, LinqToDB.Mapping.Nullable]