[NaCl SDK] nacl_io: Remove unneeded glibc syscall entry points.

native_client_sdk/src/libraries/nacl_io/library.dsc

Index: native_client_sdk/src/libraries/nacl_io/library.dsc
diff --git a/native_client_sdk/src/libraries/nacl_io/library.dsc b/native_client_sdk/src/libraries/nacl_io/library.dsc
index b09a49ecdfd1d1843be5471b19ed57f108a7e36e..95b0c864d52979e59bac7ea65990be010a8fbb9f 100644
--- a/native_client_sdk/src/libraries/nacl_io/library.dsc
+++ b/native_client_sdk/src/libraries/nacl_io/library.dsc
@@ -73,17 +73,12 @@
         "syscalls/cfsetispeed.c",
         "syscalls/cfsetospeed.c",
         "syscalls/cfsetspeed.c",
-        "syscalls/chdir.c",
         "syscalls/chmod.c",
         "syscalls/chown.c",
         "syscalls/connect.c",
-        "syscalls/fchdir.c",
-        "syscalls/fchmod.c",
         "syscalls/fchown.c",
         "syscalls/fcntl.c",
-        "syscalls/fdatasync.c",
         "syscalls/freeaddrinfo.c",
-        "syscalls/fsync.c",
         "syscalls/ftruncate.c",
         "syscalls/gai_strerror.c",
         "syscalls/getaddrinfo.c",
@@ -109,8 +104,6 @@
         "syscalls/lchown.c",
         "syscalls/link.c",
         "syscalls/listen.c",
-        "syscalls/lstat.c",
-        "syscalls/mkdir.c",
         # Not called mount.c to avoid object file naming conflict with
         # mount.cc.
         "syscalls/syscall_mount.c",
@@ -118,14 +111,12 @@
         "syscalls/ntohs.c",
         "syscalls/pipe.c",
         "syscalls/poll.c",
-        "syscalls/readlink.c",
         "syscalls/realpath.c",
         "syscalls/recv.c",
         "syscalls/recvfrom.c",
         "syscalls/recvmsg.c",
         "syscalls/remove.c",
         "syscalls/rename.c",
-        "syscalls/rmdir.c",
         "syscalls/select.c",
         "syscalls/send.c",
         "syscalls/sendmsg.c",
@@ -152,7 +143,6 @@
         "syscalls/uname.c",
         "syscalls/unlink.c",
         "syscalls/utime.c",
-        "syscalls/utimes.c",
       ],
     }
   ],