[toast] Remove <cr-toast> TODO now CL:2210194 has landed

CL:2210194 updated <cr-toast> own deps, so no need our files app BUILD
to interpolate <cr-toast> internal deps anymore. Remove the TODO.

Tbr: adanilo
Bug: 1002391,1033660
Change-Id: I50022f87ba14843a4e46b8c0088e7d7d922143a7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2213649Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#771502}

ui/file_manager/file_manager/foreground/elements/BUILD.gn

@@ -104,9 +104,6 @@ js_library("files_spinner") {
 js_library("files_toast") {
   visibility += [ "//ui/file_manager/gallery/*" ]
   deps = [
-    # TODO(crbug.com/1033660) Remove this line once CL:2144427 follow-up adds
-    # an iron-a11y-announcer deps to the js_library('cr_toast') rule.
-    "//third_party/polymer/v1_0/components-chromium/iron-a11y-announcer:iron-a11y-announcer-extracted",
     "//ui/webui/resources/cr_elements/cr_button:cr_button",
     "//ui/webui/resources/cr_elements/cr_toast:cr_toast",
   ]