Revert "Add OutputPageScriptsForBottomQueue hook"

After some discussion with Roan, it turns out this
hook is unnecessary. The proper solution is to use
addModuleScripts/addModuleStyles instead of a 
plain addModules.

This reverts commit e7361de181dcadbcc7c32de92b3498c9fb9d0193.

Bug: 68712
Change-Id: Iadbff5f7fbbc5a08d6336674b12315967f45591d
Merge "Revert "Add OutputPageScriptsForBottomQueue hook""