Delete obsolete "move to chrome/services" TODO

Change-Id: I7ddbabf86c83256d608bd0f97736e8ead373a81d
Reviewed-on: https://chromium-review.googlesource.com/c/1337217Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Nigel Tao <nigeltao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608291}

chrome/services/app_service/BUILD.gn

@@ -5,7 +5,6 @@
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
-# TODO(crbug.com/826982): move to chrome/services.
 source_set("lib") {
   sources = [
     "app_registry/app_registry.cc",