@HvyMetal55
It's Airbrake. I take it you have Enhanced Native Trainer installed? Airbrake comes with ENT as default but it is easy to deactivate. If you have ENT installed follow the instructions below to completely deactivate Airbrake.
Open up 'ent-config.xml' (in main GTA V install folder) & look for the line:
<key function="toggle_airbrake" value="VK_F6"/>
& change it to:
<key function="toggle_airbrake" value="VK_NOTHING"/>
You will probably also want to scroll down & find:
<controller function="toggle_airbrake">
<button value="R_SHOULDER"/>
<button value="BUTTON_A"/>
</controller>
& change it to:
<controller function="toggle_airbrake">
</controller>
This will deactive any ability to accidentally activate Airbrake whether on the Keyboard or the Controller.
If you don't have ENT installed then you are looking to remove this mod or find another mod that installs Airbrake along with itself. Don't think there are many.
Here is a targetted Google search of 5Mods for 'airbrake' that should aid in finding a culprit.