Remove v3.0 obsolete members in 4.0

[Carl-Hugo]

From StartupExtensions.cs, remove:

• public static IServiceCollection AddForEvolveLocalization(this IServiceCollection services)
• public static IServiceCollection AddForEvolveLocalization(this IServiceCollection services, Action<object> setupAction)
• public static IMvcBuilder AddForEvolveMvcLocalization(this IMvcBuilder mvcBuilder)
• public static IApplicationBuilder UseForEvolveRequestLocalization(this IApplicationBuilder app)