Change keyboard level include guards to pragma once (#14248)

* Change keyboard level include guards to `pragma once`

And clean up a lot of layout macros

* Oops

* Remove dangling endif

keyboards/helix/local_drivers/i2c.h

@@ -1,5 +1,4 @@
-#ifndef I2C_H
-#define I2C_H
+#pragma once
 
 #include <stdint.h>
 
@@ -45,5 +44,3 @@ extern unsigned char i2c_readNak(void);
 extern unsigned char i2c_read(unsigned char ack);
 
 #define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak();
-
-#endif

keyboards/helix/local_drivers/serial.h

@@ -1,5 +1,4 @@
-#ifndef SOFT_SERIAL_H
-#define SOFT_SERIAL_H
+#pragma once
 
 #include <stdbool.h>
 
@@ -85,5 +84,3 @@ int  soft_serial_transaction(int sstd_index);
 #ifdef SERIAL_USE_MULTI_TRANSACTION
 int  soft_serial_get_and_clean_status(int sstd_index);
 #endif
-
-#endif /* SOFT_SERIAL_H */

keyboards/helix/local_drivers/ssd1306.h

@@ -1,5 +1,4 @@
-#ifndef SSD1306_H
-#define SSD1306_H
+#pragma once
 
 #include <stdbool.h>
 #include <stdio.h>
@@ -88,5 +87,3 @@ void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
 void matrix_render(struct CharacterMatrix *matrix);
 
 bool process_record_gfx(uint16_t keycode, keyrecord_t *record);
-
-#endif

keyboards/helix/pico/split_util.h

@@ -1,5 +1,4 @@
-#ifndef SPLIT_KEYBOARD_UTIL_H
-#define SPLIT_KEYBOARD_UTIL_H
+#pragma once
 
 #include <stdbool.h>
 #include "eeconfig.h"
@@ -15,5 +14,3 @@ void split_keyboard_setup(void);
 bool is_helix_master(void);
 
 void matrix_master_OLED_init (void);
-
-#endif

keyboards/helix/rev1/split_util.h

@@ -1,5 +1,4 @@
-#ifndef SPLIT_KEYBOARD_UTIL_H
-#define SPLIT_KEYBOARD_UTIL_H
+#pragma once
 
 #include <stdbool.h>
 #include "eeconfig.h"
@@ -16,5 +15,3 @@ bool has_usb(void);
 void keyboard_slave_loop(void);
 
 void matrix_master_OLED_init (void);
-
-#endif

keyboards/helix/rev2/serial_config_simpleapi.h

@@ -1,8 +1,5 @@
-#ifndef SERIAL_CONFIG_SIMPLEAPI_H
-#define SERIAL_CONFIG_SIMPLEAPI_H
+#pragma once
 
 #undef SERIAL_USE_MULTI_TRANSACTION
 #define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
 #define SERIAL_MASTER_BUFFER_LENGTH MATRIX_ROWS/2
-
-#endif // SERIAL_CONFIG_SIMPLEAPI_H

keyboards/helix/rev2/split_scomm.h

@@ -1,5 +1,4 @@
-#ifndef SPLIT_COMM_H
-#define SPLIT_COMM_H
+#pragma once
 
 #ifndef SERIAL_USE_MULTI_TRANSACTION
 /* --- USE Simple API (OLD API, compatible with let's split serial.c) --- */
@@ -20,5 +19,3 @@ void serial_slave_init(void);
 int serial_update_buffers(int master_changed);
 
 #endif
-
-#endif /* SPLIT_COMM_H */

keyboards/helix/rev2/split_util.h

@@ -1,5 +1,4 @@
-#ifndef SPLIT_KEYBOARD_UTIL_H
-#define SPLIT_KEYBOARD_UTIL_H
+#pragma once
 
 #include <stdbool.h>
 #include "eeconfig.h"
@@ -15,5 +14,3 @@ void split_keyboard_setup(void);
 bool is_helix_master(void);
 
 void matrix_master_OLED_init (void);
-
-#endif