How to remove an boot entry in the Windows 7

The easiest way to remove an entry in the Windows 7 Boot Configuration is to use msconfig.  

To launch msconfig:

1.  Click Start
2.  In the Search text box, type msconfig
3.  Launch msconfig by selecting it from the search results above the search text box.

After msconfig is launched:

1.  Go to the Boot tab
2.  Select the boot entry you want to delete.
3.  Click the Delete button and then click OK.

Make sure to be logged in to the Windows 7 partition you want to keep when performing these steps so you don't delete the good installation by mistake.