Entity Framework Migration Inheritance without creating the parent table

I have database objects that all inherit from a parent class with some base properties.

Base Entity

public abstract class Entity : IAuditable
{
    public int Id { get; set; }
    public string CreatedBy { get; set; }
    public int? CreatedDate { get; set; }
    public string UpdateBy { get; set; }
    public int? UpdatedDate { get; set; }
}

Base Entity Configuration file

public EntityConfiguration()
{
    HasKey(e => e.Id);

    Property(e => e.Id)
        .HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);

    Property(e => e.CreatedBy)
        .IsUnicode(false)
        .HasMaxLength(255);

    Property(e => e.UpdatedBy)
        .IsUnicode(false)
        .HasMaxLength(255);
}

I subclass entity on all the child classes to inherit the common properties

public class User : Entity
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

DbContext

public class SomeContext : DbContext
{
    public SomeContext() : base("name=DefaultConnection")
    {
    }

    public static SomeContext Create()
    {
        return new SomeContext();
    }

    public DbSet<Collaboration> Users { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        modelBuilder.Configurations.Add(new EntityConfiguration());
        modelBuilder.Configurations.Add(new UserConfiguration());
    }
}

When I create the migrations It will create all the inherited properties correctly but it still creates the parent class (Entity) even though I don't have a DbSet. If I remove the line that adds the configuration settings in the OnModelCreating method I don't get the max lengths and Unicode settings.

Is there a way to use the configuration properties without actually creating the parent table and without adding the configurations to all the subclass configuration files.