px4_log.h: remove hrt_absolute_time() declaration (it does not belong here)

src/modules/uavcan/sensors/baro.cpp

@@ -35,6 +35,7 @@
  * @author Pavel Kirienko <pavel.kirienko@gmail.com>
  */
 
+#include <drivers/drv_hrt.h>
 #include "baro.hpp"
 #include <cmath>
 

src/modules/uavcan/sensors/gnss.cpp

@@ -40,6 +40,7 @@
  */
 
 #include "gnss.hpp"
+#include <drivers/drv_hrt.h>
 #include <systemlib/err.h>
 #include <mathlib/mathlib.h>
 

src/modules/uavcan/sensors/mag.cpp

@@ -37,6 +37,7 @@
 
 #include "mag.hpp"
 
+#include <drivers/drv_hrt.h>
 #include <systemlib/err.h>
 
 const char *const UavcanMagnetometerBridge::NAME = "mag";