Revert "Cleanup transitive includes in the legacy inlines."

This reverts commit 43df953502c9615781e73ac3cc0db2a711a86998.

Reason for revert: Breaks most AOSP builds.
https://android-build.googleplex.com/builds/branch-dashboard/aosp-master?build_id=4399910

Change-Id: I53459f97b7dffb1f7f602db03893564dd3cfe6bf
diff --git a/libc/include/android/legacy_fenv_inlines_arm.h b/libc/include/android/legacy_fenv_inlines_arm.h
index f5b2828..58c49c2 100644
--- a/libc/include/android/legacy_fenv_inlines_arm.h
+++ b/libc/include/android/legacy_fenv_inlines_arm.h
@@ -29,12 +29,10 @@
 #ifndef ANDROID_LEGACY_FENV_INLINES_ARM_H
 #define ANDROID_LEGACY_FENV_INLINES_ARM_H
 
-#include <sys/cdefs.h>
+#include <fenv.h>
 
 #if __ANDROID_API__ < __ANDROID_API_L__ && defined(__arm__)
 
-#include <fenv.h>
-
 __BEGIN_DECLS
 
 #define FPSCR_ENABLE_SHIFT 8