- Removed 2 jQuery AJAX calls and replaced with our fetch wrapper
- Deleted an AJAX call that wasn't attached to any element since #24989
- Tested the notification count and notification table functionality and
it works as before
# Demo using `fetch` instead of jQuery AJAX

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Signed-off-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: silverwind <me@silverwind.io>