How to remove Ubuntu from a disk with Windows?

Linux file system and Windows are completely different, so it is unlikely that one system lie in the other.
If you put Linux alongside Windows, I created a separate partition on the hard disk.
Here it is necessary to remove, and then expand the Windows partition using the freed space

During installation linux creates on the hard disk logical partition with its own format(usually ext4) and all system data stored on it.
To get rid of these files can be different.
One of the ways:
With this program, acronus disk meneger deleted the linux partitions and then the resulting empty space to mark up the clear windows format (NTFS)

A couple of tips:

• If you are not sure the right category or not, Express (it can be partitions are needed for windows)
  
• linux usually creates one or more partitions ext4 and swap partition linux-swap(them and need to remove)
  
• Be careful
  

Ubuntu can still be placed next to Windows:
\rhttps://www.google.com/search?q=wubi
To remove it had through the same installer. And now look at the disk files and folders wubi.*, ubuntu.* - most likely, everything is there.