Cleanup transitive includes in the legacy inlines.

We don't want to be exposing so much through the headers for the
implementation details unless we have to.

Test: make checkbuild
Bug: None
Change-Id: Ieca9cd8106725e08887a3e9fde60d1eef64ef98b
diff --git a/libc/include/android/legacy_sys_wait_inlines.h b/libc/include/android/legacy_sys_wait_inlines.h
index 1124f8e..4298d76 100644
--- a/libc/include/android/legacy_sys_wait_inlines.h
+++ b/libc/include/android/legacy_sys_wait_inlines.h
@@ -30,12 +30,13 @@
 #define _ANDROID_LEGACY_SYS_WAIT_INLINES_H_
 
 #include <sys/cdefs.h>
+
+#if __ANDROID_API__ < __ANDROID_API_J_MR2__
+
 #include <sys/syscall.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
-#if __ANDROID_API__ < __ANDROID_API_J_MR2__
-
 __BEGIN_DECLS
 
 static __inline pid_t wait4(pid_t pid, int* status, int options, struct rusage* rusage) {