Removing dualboot screen?

I recently removed windows from my Mac using bootcamp but it still loads the windows and restarts. I then have to hold the options button and it would lead me to the selection of either the Mac drive or the windows drive, how can I remove that so it would load directly to the mac drive without having to hold down the option key every time I turn my mac on?

Not sure if this is in the wrong section or not.

System Preferences - Startup Disk

Select the MacIntosh HD and restart

System Preferences > Startup Disk. Choose the partition that has OSX and restart. Am I correct in understanding that you tried to remove your windows partition through bootcamp, and it is still there? Is it still showing the partition in disk utility?

@Shocki

Please do not cross post as it causes confusion and clutter in the forums. Always post once and post back to the original thread.