• phabricator-application-menu-expanded
  • Added in https://we.phorge.it/rPfed0a2a496536d5a2a22f712861383299fabd3bd, usage removed in https://we.phorge.it/rP6f5dab634db26a14ba2ee000a3cee75c9d6152fb from src/view/page/menu/PhabricatorMainMenuView.php
• phabricator-core-menu-icon
  • Added in https://we.phorge.it/rPe3f6bbfff888008fcdf88f620b6716ab5add209b, usage removed in https://we.phorge.it/rP20035fe9a8ed53f4616528b114df61465f1d1f46 and https://we.phorge.it/rP6f5dab634db26a14ba2ee000a3cee75c9d6152fb
• phabricator-expand-search-menu
  • Added in https://we.phorge.it/rP919bd4a03499305093d8882952a9dd3dac1c55a9, usage removed in https://we.phorge.it/rP6f5dab634db26a14ba2ee000a3cee75c9d6152fb from src/view/page/menu/PhabricatorMainMenuView.php
• phabricator-main-menu-expand-button
  • Added in https://we.phorge.it/rP3c7944d297b2416d568ca2a7ab1e5c212adb78ff, usage removed in https://we.phorge.it/rP6f5dab634db26a14ba2ee000a3cee75c9d6152fb
• phabricator-main-menu-group-logo
  • Added in https://we.phorge.it/rP3c7944d297b2416d568ca2a7ab1e5c212adb78ff, usage removed in https://we.phorge.it/rP54fe74d6216707267a1c818404507d2ee5ad82ad

Grep the code for each CSS selector (grep --exclude="*.css" -R 'some-search-string' .), also do partial searches, get no results.