wrecked f2 configuration, how do I reset it to default.

[methodman3000]

I was trying to add controllers using F2 , and mistakenly changed the config file to exit when I hit the x button on the logitech 310 game controller.  How do I set this back to the defaults.  Everytime I use a controller f2 in any time I the playstation emulator. interferes and when I press escape or x button the emulator exits.

 

[methodman3000]

sorry I meant the F2 wants me to set up a command  and takes the emulator over and I don't understand what to make those options do.  But they stop the games from running

[methodman3000]

Press to remap key now.  alert keeps getting in the way of game play.  I somehow changed the start key and now when I press start on the gamepad it kicks me out of the game. for retroarch ps1 controller.