mklibs: revert r31315

SVN-Revision: 31316

tools/mklibs/patches/011-missing_unistd.patch

@@ -1,10 +0,0 @@
---- a/src/mklibs-readelf/elf.cpp
-+++ b/src/mklibs-readelf/elf.cpp
-@@ -25,6 +25,7 @@
- #include <fcntl.h>
- #include <sys/mman.h>
- #include <sys/stat.h>
-+#include <unistd.h>
-
- using namespace Elf;
-