delete px4_includes.h header and update boards/ to use syslog

src/modules/logger/log_writer_file.cpp

@@ -33,8 +33,10 @@
 
 #include "log_writer_file.h"
 #include "messages.h"
+
 #include <fcntl.h>
 #include <string.h>
+#include <errno.h>
 
 #include <mathlib/mathlib.h>
 #include <px4_posix.h>

src/modules/logger/logger.cpp

@@ -52,7 +52,6 @@
 #include <uORB/topics/vehicle_command_ack.h>
 
 #include <drivers/drv_hrt.h>
-#include <px4_includes.h>
 #include <px4_getopt.h>
 #include <px4_log.h>
 #include <px4_posix.h>