crazy_linker: Removed obsolete <sys/exec_elf.h> include.

It's no longer necessary since <elf.h> included from elf_traits.h
will include it for us.

BUG=NONE

Change-Id: Ie36630379b2aa9e580a382d7cacbccd91f07013f
diff --git a/sources/android/crazy_linker/src/elf_traits.h b/sources/android/crazy_linker/src/elf_traits.h
index afd69da..166cdb1 100644
--- a/sources/android/crazy_linker/src/elf_traits.h
+++ b/sources/android/crazy_linker/src/elf_traits.h
@@ -8,7 +8,6 @@
 // NOTE: <stdint.h> is required here before <elf.h>. This is a NDK header bug.
 #include <stdint.h>
 #include <elf.h>
-#include <sys/exec_elf.h>
 
 // ELF is a traits structure used to provide convenient aliases for
 // 32/64 bit Elf types, depending on the target CPU bitness.