That's the terminal. You have 2 real options:
1) Go into the settings and change it to COMMAND PROMPT for default.
Or 2) Set it to autohide the terminal.
See that V arrow. Click it to access the Settings.
And there's the Default terminal application. Change it to Windows Console Host.
OR....
Click the APPEARANCE OPTION and slide those sliders to hide the teminal, and toss it in the notification area.
1) Go into the settings and change it to COMMAND PROMPT for default.
Or 2) Set it to autohide the terminal.
See that V arrow. Click it to access the Settings.
And there's the Default terminal application. Change it to Windows Console Host.
OR....
Click the APPEARANCE OPTION and slide those sliders to hide the teminal, and toss it in the notification area.