Remove load_time_data from //ui/webui/resources/js:dark_mode's deps

R=rbpotter@chromium.org
BUG=none

Change-Id: I9f2b04096548aeac6aac029ba1a02094b4fbc10a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1566678
Commit-Queue: Dan Beam <dbeam@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Auto-Submit: Dan Beam <dbeam@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#650520}

ui/webui/resources/js/BUILD.gn

@@ -55,7 +55,6 @@ js_library("cr") {
 js_library("dark_mode") {
   deps = [
     ":cr",
-    ":load_time_data",
   ]
   externs_list = [ "$externs_path/pending.js" ]
 }