tm1637: remove debug output

main/tm1637.c

@@ -57,7 +57,6 @@ static void stop_transfer(tm1637_config* config) {
 }
  
  static void write_byte(tm1637_config* config, uint8_t byte) {
- 	printf("Writing byte %x\n", byte);
  	uint8_t data = byte;
 	
 	for (uint8_t i = 0; i<8; i++) {
@@ -88,7 +87,6 @@ static void stop_transfer(tm1637_config* config) {
 		result = gpio_get_level(config->dio_pin);
 	}
 	
-	printf("Data transfer has been acknowleged\n");
 	delay();
 	gpio_set_level(config->clk_pin, 0);
 	delay();