Turned on "mods" and Cant turn it off cant see any servers

[BMoore*]

Hey I checked "mods" and obviously this was a mistake because I cannot see where to uncheck it now and hardly see any servers to join.

 

How does one uncheck/ turn off this "mod" feature?

[PatrickAWlson]

On the start program, before you press play:
 

Press "Settings"

Uncheck "Enable Mods"