Editora 0.17.0. Archived, so links from that release keep working. Read the 0.18.5 page →
Edit: Delete Subword Forward
edit.deleteSubwordForward Delete from the caret to the next subword boundary.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: Delete Subword Forward, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.