Delete dbscheme

Update after merge

Author: Dave Bartolomeo

ql/lib/ext/config/immutable_actions.yml

@@ -1,6 +1,6 @@
 extensions:
   - addsTo:
-      pack: github/actions-all
+      pack: codeql/actions-all
       extensible: immutableActionsDataModel
     data:
       - ["actions/checkout"]