Revert "WL-2177: Skills categories in Research Methods and visa-versa"
Revert "WL-2177: Skills categories in Research Methods and visa-versa"

This reverts commit 733b904988925af53fcfd76efe17aebc8b7ae60a.

ox-it/wl-course-signup,ox-it/wl-course-signup,ox-it/wl-course-signup,ox-it/wl-course-signup,ox-it/wl-course-signup