Revert "Use new @board attribute for ifdef support"

This reverts commit 750b02b4e5.

src/modules/sensors/sensor_params.c

@@ -960,7 +960,6 @@ PARAM_DEFINE_INT32(BAT_V_SCALE_IO, 10000);
 /**
  * Scaling factor for battery voltage sensor on FMU v2.
  *
- * @board CONFIG_ARCH_BOARD_PX4FMU_V2
  * @group Battery Calibration
  */
 PARAM_DEFINE_FLOAT(BAT_V_SCALING, 0.0082f);
@@ -970,7 +969,6 @@ PARAM_DEFINE_FLOAT(BAT_V_SCALING, 0.0082f);
  *
  * For R70 = 133K, R71 = 10K --> scale = 1.8 * 143 / (4096*10) = 0.0063
  *
- * @board CONFIG_ARCH_BOARD_AEROCORE
  * @group Battery Calibration
  */
 PARAM_DEFINE_FLOAT(BAT_V_SCALING, 0.0063f);