training/explanation-theory-of-joystick-control.md

@@ -16,8 +16,6 @@ Goals:
 # Control schemes
 ## Tank control
 
-### General idea
-
 ### Transformation
 
 The `SDL` library returns joystick axes with the C type `int16_t`, which is a signed 16-bit integer. The range of that type is $\nobreak{[-2^{15}, 2^{15} - 1] = [-32768, 32767]}$ ($2^{15}$ rather than $2^{16}$ because it is a signed integer).