Remove the old "SecureRandom" service, formerly used by get_random_bytes()

src/trusted/desc/BUILD.gn

 # Copyright (c) 2014 The Native ClientAuthors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 #  Autogenerated from src/trusted/desc/build.scons.
 
 static_library("nrd_xfer") {
   sources = [
       "nacl_desc_base.c",
       "nacl_desc_cond.c",
       "nacl_desc_custom.c",
       "nacl_desc_dir.c",
       "nacl_desc_effector_trusted_mem.c",
       "nacl_desc_file_info.c",
       "nacl_desc_imc.c",
       "nacl_desc_imc_shm.c",
       "nacl_desc_invalid.c",
       "nacl_desc_io.c",
       "nacl_desc_mutex.c",
       "nacl_desc_null.c",
       "nacl_desc_quota.c",
       "nacl_desc_quota_interface.c",
-      "nacl_desc_rng.c",
       "nacl_desc_semaphore.c",
       "nacl_desc_sync_socket.c",
       "nacl_desc_wrapper.cc",
       "nrd_all_modules.c",
       "nrd_xfer.c",
   ]
   if (os != "win") {
     sources += [
       "posix/nacl_desc.c",
       "posix/nacl_desc_conn_cap.c",
       "posix/nacl_desc_imc_bound_desc.c",
       "posix/nacl_makeboundsock.c",
     ]
   }
 
   if (os == "win") {
     sources += [
       "nacl_desc_imc_bound_desc.c",
       "win/nacl_desc.c",
     ]
   }
 }