Is it safe to delete OSXRESERVED partition? because it is still there after windows 10 installation

I recently got a MacBook Pro 15" 2015 Retina model running MacOSX 10.11.5 El Capitan.

My steps for installing Windows 8.1:

Create a .ISO file from the DVD install disc and save the .ISO file to a USB Flash drive.

run bootcamp and direct the .ISO file location to the usb flash drive.

Partition the SSD

and then it reboot and the windows installer is on and i complete the Windows 8.1 installation

then the bootcamp drivers installer kicks in and installs the drivers

then it restarts and i upgrade tow Windows 10 afterwards and update the bootcamp drivers

Next I boot back to Mac OS X but the OSXRESERVED partition is still there.

And when i restart pressing the option key, i see 1 Macintosh HD but 2 Windows drives listed

Is it safe to delete the OSXRESERVED partition? I read online that deleting it will cause Windows 10 not to boot anymore.

Or should I just leave it alone?