Move layouts for direct_pins boards to data driven (#19872)

keyboards/bpiphany/sixshooter/sixshooter.h

@@ -2,14 +2,6 @@
 
 #include "quantum.h"
 
-#define LAYOUT( \
-    k00, k01, k02, \
-    k10, k11, k12 \
-) { \
-    { k00, k01, k02 }, \
-    { k10, k11, k12 } \
-}
-
 inline void sixshooter_led_0_on(void)    { DDRB |=  (1<<6); PORTB |=  (1<<6); }
 inline void sixshooter_led_1_on(void)    { DDRC |=  (1<<7); PORTC |=  (1<<7); }
 inline void sixshooter_led_2_on(void)    { DDRD |=  (1<<0); PORTD |=  (1<<0); }