drivers/sen5x: change header guard to #pragma once

Author: crasbe

drivers/include/sen5x.h

@@ -6,8 +6,7 @@
  * directory for more details.
  */
 
-#ifndef SEN5X_H
-#define SEN5X_H
+#pragma once
 
 /**
  * @defgroup    drivers_sen5x Sensirion Embedded I2C SEN5x Driver
@@ -327,4 +326,3 @@ void sen5x_get_voc_state(const sen5x_t *dev, uint8_t *state, uint8_t state_size)
 #endif
 
 /** @} */
-#endif /* SEN5X_H */

drivers/sen5x/include/sen5x_constants.h

@@ -6,8 +6,7 @@
  * directory for more details.
  */
 
-#ifndef SEN5X_CONSTANTS_H
-#define SEN5X_CONSTANTS_H
+#pragma once
 
 /**
  * @ingroup     drivers_sen5x
@@ -35,4 +34,3 @@ extern "C" {
 #endif
 
 /** @} */
-#endif /* SEN5X_CONSTANTS_H */

drivers/sen5x/include/sen5x_params.h

@@ -6,8 +6,7 @@
  * directory for more details.
  */
 
-#ifndef SEN5X_PARAMS_H
-#define SEN5X_PARAMS_H
+#pragma once
 
 /**
  * @ingroup     drivers_sen5x
@@ -90,4 +89,3 @@ static const saul_reg_info_t sen5x_saul_info[] =
 #endif
 
 /** @} */
-#endif /* SEN5X_PARAMS_H */