Basically, here is the summary of what you need to do.
<![if !supportLists]>1. <![endif]>Copy the long ID from the event log
<![if !supportLists]>2. <![endif]>Search the ID in SharePoint Config DB
<![if !supportLists]>3. <![endif]>Retrieve the Column ID
<![if !supportLists]>4. <![endif]>Then run stsadm -o deleteconfigurationobject command
<![if !supportLists]>5. <![endif]>Done!
Here are all the details how you can continue,
<![if !supportLists]>1. <![endif]>Copy the long ID from the event 8031, just like the blue highlight in the image above
<![if !supportLists]>2. <![endif]>Logon to SQL Server and lunch SQL Management Studio
<![if !supportLists]>3. <![endif]>Navigate to SharePoint_Config database, create a new SQL Query, and enter the following statement
SELECT ID, Properties FROM [Objects] WHERE [Name] LIKE '%24ca5db5-9a2f-4a3d-9e52-38ab5a1a7ab0_735388cb-9769-4d37-b212-0b17a5db02f8%'
<![if !supportLists]>4. <![endif]>Note the id was copied from the screen above.
<![if !supportLists]>5. <![endif]>The query result returned with one record found. (screen below)
Feel free to look into the XML contents if you are interested.
<![if !supportLists]>6. <![endif]>Then I copy the column id from the above image (highlighted in purple)
<![if !supportLists]>7. <![endif]>Go back to the Web server and run the following stsadm.
STSADM -o deleteconfigurationobject -id C8D9F11F-D129-41D7-9248-D54DE43059D2
<![if !supportLists]>8. <![endif]>The operation completed successfully,
Hope you manage to do these steps.