Clean up ISSI driver includes (#7734)

* Clean up ISSI driver includes

* Missed an endif

drivers/issi/is31fl3731-simple.c

@@ -16,21 +16,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifdef __AVR__
-#    include <avr/interrupt.h>
-#    include <avr/io.h>
-#    include <util/delay.h>
-#else
-#    include "wait.h"
-#endif
-
-#include <stdint.h>
-#include <stdbool.h>
-#include <string.h>
 #include "is31fl3731-simple.h"
 #include "i2c_master.h"
-#include "progmem.h"
-#include "print.h"
+#include "wait.h"
 
 // This is a 7-bit address, that gets left-shifted and bit 0
 // set to 0 for write, 1 for read (as per I2C protocol)
@@ -156,6 +144,7 @@ void IS31FL3731_init(uint8_t addr) {
 
     // enable software shutdown
     IS31FL3731_write_register(addr, ISSI_REG_SHUTDOWN, 0x00);
+
     // this delay was copied from other drivers, might not be needed
     wait_ms(10);