[mojo] Delete third_party/mojo

mojo/public/c/system/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Depend on this target to use the types etc defined in the system without
 # linking against a specific implementation of the system. To link against a
 # particular implementation, use the :for_component or
 # :for_shared_library targets, depending on the type of target you are.
 source_set("system") {
   sources = [
@@ skipping 20 matching lines @@
 #
 # For shared_library targets (e.g., a Mojo App), add
 # //mojo/public/c/system:for_shared_library to your deps
 
 group("for_shared_library") {
   public_deps = [
     ":system",
   ]
   if (is_component_build) {
     deps = [
-      "//third_party/mojo/src/mojo/edk/system",
+      "//mojo/edk/system",
     ]
   } else {
     deps = [
       "../../platform/native:system",
     ]
   }
 }
 
 group("for_component") {
   public_deps = [
     ":system",
   ]
   if (is_component_build) {
     deps = [
-      "//third_party/mojo/src/mojo/edk/system",
+      "//mojo/edk/system",
     ]
   }
 }