Duplicate module input in the Orchard CMS toolbar

I worked on creating a module for Orchard; based on the NN study guide . After I worked on the project, I went through and changed the namespace, various classes and variable names, since I made various assumptions about names that did not stand out.

Since this is a renaming exercise, the module (“Definition List”) is displayed twice in the toolbar:

Here is my module.txt:

Name: Definition List
AntiForgery: enabled
Author: Richard Slater
Website: http://www.richard-slater.co.uk/
Version: 0.2
OrchardVersion: 1.1
Description: Module Part to provision a selectable list of definitions as check boxes
Features:
    Definition List:
        Description: Adds Definition List Part
        Category: Content

, .

Migrations.cs:

public class Migrations : DataMigrationImpl {
    private readonly IRepository<DefinitionRecord> _definitionListRepository;
    private readonly IEnumerable<DefinitionRecord> _sampleRecords = new List<DefinitionRecord> {
        new DefinitionRecord { Term = "Term A", Definition = "This is the definition for Term A" },
        new DefinitionRecord { Term = "Term B", Definition = "This is the definition for Term B" },
        new DefinitionRecord { Term = "Term C", Definition = "This is the definition for Term C" }
    };

    public Migrations(IRepository<DefinitionRecord> definitionListRepository) {
        _definitionListRepository = definitionListRepository;
    }

    public int Create()
    {
        SchemaBuilder.CreateTable("DefinitionListPartRecord",
            table => table
                .ContentPartRecord()
            );

        SchemaBuilder.CreateTable("DefinitionRecord",
            table => table
                .Column<int>("Id", column => column.PrimaryKey().Identity())
                .Column<string>("Term")
                .Column<string>("Definition")
            );

        SchemaBuilder.CreateTable("ContentDefinitionRecord",
            table => table
                .Column<int>("Id", column => column.PrimaryKey().Identity())
                .Column<int>("DefinitionListPartRecord_Id")
                .Column<int>("DefinitionRecord_Id")
            );

        ContentDefinitionManager.AlterPartDefinition(
            "DefinitionListPart",
            builder => builder.Attachable());

        if (_definitionListRepository == null)
            throw new InvalidOperationException("Cannot find the Definition List Repository");

        foreach (var entity in _sampleRecords) {
            _definitionListRepository.Create(entity);
        }

        return 1;
    }
}