Clear all items from a publish transaction for a certain publication. This can be used to implement publish in child publications functionality without publishing content in the parent (master) publication. See https://gist.github.com/willprice76/9639405 for a start point, you will want to put a check to see if the status is Success before delet…

ClearMasterTransactionResolver.cs

using System;
using System.Collections.Generic;
using Tridion.ContentManager;
using Tridion.ContentManager.Publishing;
using Tridion.ContentManager.Publishing.Resolving;

namespace Example.Resolvers
{
    /// <summary>
    /// Example resolver to clear all items from publish transactions in certain publications. This can be used as is, or in combination with the 
    /// event system, to remove these empty transactions from the publish queue
    /// </summary>
    public class ExampleResolver
    {
        public void Resolve(IdentifiableObject item, ResolveInstruction instruction, PublishContext context, global::Tridion.Collections.ISet<ResolvedItem> resolvedItems)
        {
            var noPublishConfig = new List<int> { 18, 20 };//Load your master publication ids in from config however you like
            if (noPublishConfig != null & noPublishConfig.Contains(context.Publication.Id.ItemId))
            {
                resolvedItems.Clear();
            }
        }
    }
}