If I uninstall ubuntu, will Windows Boot Manager still be there?

I want to get rid of my Ubuntu partition, because I never use it on my laptop, only on my desktop.

If I remove Ubuntu (I'm assuming GRUB will go with it), will Windows Boot Manager still allow me to boot into Windows, or will I need to do something else?

Removing Ubuntu must be done carefully because you might mess up things with booting Windows.

If you simply delete the Ubuntu partition (assuming you have a Windows partition, an Ubuntu partition and a swap partition), Grub will most probably still be there but be messed up, not allowing you to boot Windows.

Look here: http://www.makeuseof.com/tag/how-to-safely-uninstall-ubuntu-in-windows-dual-boot-environment/

In short:

1. Boot Windows

2. Delete Linux partitions from within Windows

3. Restore MBR (to remove Grub and install the Windows bootloader) using bootrec /fixmbr bootrec /fixboot

4. Recover the space left by the Ubuntu partitions by creating a new NTFS partition or enlarging the Windows partiton.