[NaCl SDK] Remove syscalls wrappers for chmod and unlink.

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 95b0c864d52979e59bac7ea65990be010a8fbb9f..599c789b5f6d451e993f748524a89ae21989fc9e 100644
--- a/native_client_sdk/src/libraries/nacl_io/library.dsc
+++ b/native_client_sdk/src/libraries/nacl_io/library.dsc
@@ -73,7 +73,6 @@
         "syscalls/cfsetispeed.c",
         "syscalls/cfsetospeed.c",
         "syscalls/cfsetspeed.c",
-        "syscalls/chmod.c",
         "syscalls/chown.c",
         "syscalls/connect.c",
         "syscalls/fchown.c",
@@ -102,11 +101,8 @@
         "syscalls/kill.c",
         "syscalls/killpg.c",
         "syscalls/lchown.c",
-        "syscalls/link.c",
         "syscalls/listen.c",
-        # Not called mount.c to avoid object file naming conflict with
-        # mount.cc.
-        "syscalls/syscall_mount.c",
+        "syscalls/mount.c",
         "syscalls/ntohl.c",
         "syscalls/ntohs.c",
         "syscalls/pipe.c",
@@ -141,7 +137,6 @@
         "syscalls/truncate.c",
         "syscalls/umount.c",
         "syscalls/uname.c",
-        "syscalls/unlink.c",
         "syscalls/utime.c",
       ],
     }