You're looking to uninstall CloudReady-- it either wasn't for you or your device/model didn't work when you dualbooted! This guide will tell you how to wipe CloudReady from your drive: crucially, you'll have to do this from within Windows using the Disk Management program and not the file explorer.
Education, Enterprise, and Free
- Open your Disk Management tool. Ways vary between versions of Windows, but the most accessible way is to use your search functionality via the start menu (or equivalent) and search for "Disk Management".
- Right-click and delete each partition above number 16: these are all associated with CloudReady.
- Below partition 16 will be your original Windows partitions, along with several smaller partitions called stubs. Right-click and delete these stubs with care. During setup, CloudReady creates a variable number of "stubs" to reach 16 as there can be a different number of initial Windows partitions. These stubs will be of equal size and comparatively very small (less than 1MB-- usually 512bytes).
- Expand the main Windows partition to fill the now-empty space.