Clean up some unnecessary system_properties cruft.

Bug: 14970171
Change-Id: I6f54c35e265b849be914120f795c9f8e0cec34bb
diff --git a/init/builtins.c b/init/builtins.c
index d973a6b..d9f7bbe 100644
--- a/init/builtins.c
+++ b/init/builtins.c
@@ -33,7 +33,6 @@
 #include <linux/loop.h>
 #include <cutils/partition_utils.h>
 #include <cutils/android_reboot.h>
-#include <sys/system_properties.h>
 #include <fs_mgr.h>
 
 #include <selinux/selinux.h>
diff --git a/init/init.c b/init/init.c
index fc20198..1538aa6 100644
--- a/init/init.c
+++ b/init/init.c
@@ -46,8 +46,6 @@
 #include <private/android_filesystem_config.h>
 #include <termios.h>
 
-#include <sys/system_properties.h>
-
 #include "devices.h"
 #include "init.h"
 #include "log.h"
diff --git a/toolbox/getprop.c b/toolbox/getprop.c
index c001fda..7fd694d 100644
--- a/toolbox/getprop.c
+++ b/toolbox/getprop.c
@@ -3,7 +3,6 @@
 
 #include <cutils/properties.h>
 
-#include <sys/system_properties.h>
 #include "dynarray.h"
 
 static void record_prop(const char* key, const char* name, void* opaque)
@@ -31,8 +30,6 @@
     strlist_done(list);
 }
 
-int __system_property_wait(prop_info *pi);
-
 int getprop_main(int argc, char *argv[])
 {
     int n = 0;