Can I remove this partition?

I tried using Boot Camp but kept getting the "installation failed" message. I then tried to manually move the Windows support files into a different folder in an attempt to get windows to install, and in the process I also created a partition. Windows never installed when I rebooted my mac and now I am stuck with two volumes.

I wanted to try to install Windows with the current partition but whenever I go to Boot Camp it is asking me to create a new one. So I figure my only option would be to try to remove the current partition in place.

How can I go back to one volume? I am open to options or the most logical route. Your help would be greatly appreciated.