Move 'lcd_bootscreen()' from `lcd_init()` to 'setup()' where it is cexecute exactly once. Saves 'bool show_bootscreen'.
Move the call of 'lcd_custom_bootscreen()' to the begin of 'lcd_bootscreen()'.
Move the delays into the related functions.
Move the picture loop around 'lcd_kill_screen()' into the function.
* Auto-enable DISABLE_REDUCED_ACCURACY_WARNING if HOME_AFTER_DEACTIVATE enabled
If HOME_AFTER_DEACTIVATE, there is no need to warn on LCD since printer will home prior to starting print. Saves 60 bytes PROGMEM on AVR with U8g panel.
* Reduce lines used
* Reduce lines used
