Sharepoint 2010 - Delete this List link missing

I have been making custom list definitions and list instances in Visual Studio.  I was building and deploying the lists and noticed on the list details screen that the menu item "Delete this List" in  list settings is missing. 

Problem:

My mistake was to set Allow Deletion to false

  <ListTemplate
        Name="ListDefinition1"
        Type="10001"
        AllowDeletion="FALSE"
        DisallowContentTypes="FALSE"
        BaseType="0"
        OnQuickLaunch="FALSE"
        SecurityBits="11"
        Sequence="410"
        DisplayName="Equipment Booking"
        Description="My List Definition"
Image="/_layouts/images/itgen.gif"/>
Once this is done you no longer see the "Delete this List" link in the list settings and is intended to protect lists with items declared as records. 
Solution:
So how do you fix it.  Not through the UI but with powershell
1.) Start > Programs > Microsoft SharePoint 2010 Products
2.) Select SharePoint 2010 Management Shell which opens a power shell session
3.) Punch in following script:
$assignment = Start-SPAssignment
$web = Get-SPWeb -Identity "http://yoursite" -AssignmentCollection $assignment
$list = $web.lists["Your List Title"]
$list.AllowDeletion = $true
$list.Update() #after this is entered, the "Delete this List" link will reappear in the UI for the List Settings
$list.Delete() #this will delete the list
Stop-SPAssignment $assignment



source:http://webdevshareetc.blogspot.com/2012/01/sharepoint-2010-delete-this-list-link.html