[web] Remove apps as a tab in code logic
Since the apps tab is a modal (since D6812) the code logic that considers it a tab should be removed.
file lib/utils/url-utils.js was only used on web, so the changes don't influence native
Test Plan: Run flow check in web/. Searched for any occurences of 'apps' on web and checked that this is all that needs to be changed
Reviewers: tomek, kamil, michal
Reviewed By: kamil
Subscribers: ashoat, atul
Differential Revision: https://phab.comm.dev/D6814