LPE: Header cleanup

src/modules/local_position_estimator/local_position_estimator_main.cpp

@@ -44,13 +44,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <systemlib/systemlib.h>
 #include <systemlib/param/param.h>
 #include <systemlib/err.h>
 #include <drivers/drv_hrt.h>
 #include <math.h>
 #include <fcntl.h>
 #include <px4_posix.h>
+#include <px4_tasks.h>
 
 #include "BlockLocalPositionEstimator.hpp"