Simplify g2 object conversion

[peterbarker]

Board                    AP_Periph  blimp  bootloader  copter  heli  iofirmware  plane  rover  sub
CubeOrange-periph-heavy  *                                                                     
Durandal                            -48    *           -68     -68               -112   -96    -88
Hitec-Airspeed           *                                                                     
KakuteH7-bdshot                     48     *           20      20                -16    -8     -8
MatekF405                           60     *           68      60                60     44     32
Pixhawk1-1M-bdshot                  60                 60      60                60     44     40
f103-QiotekPeriph        *                                                                     
f303-Universal           *                                                                     
iomcu                                                                *                         
revo-mini                           60     *           68      60                60     44     32
skyviper-v2450                                         60                                      

[peterbarker]

I tested that script parameters are still moved across for all vehicles.