print-management: Remove extra script tag

Bug: b/240726981
Test: browser_tests --gtest_filter=PrintManagementBrowserTest.*
Change-Id: I35999f87b38b70f0ba0e86a4f0efae9924da389b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3878524


Auto-Submit: Camden Bickel <cambickel@google.com>
Commit-Queue: Jimmy Gong <jimmyxgong@chromium.org>
Reviewed-by: Jimmy Gong <jimmyxgong@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1045910}