Remove user_options.yml

.orchestra/config/user_options.yml

-#@data/values
-#@overlay/match_child_default missing_ok=True
----
-parallelism: 16
-build_from_source: []
-nonredistributable_base_url: "https://dummydomain.com/nonredistributable/"
-paths:
-  #! orchestra_root: /absolute/path/only
-  #! source_archives: /absolute/path/only
-  #! binary_archives: /absolute/path/only
-  #! tmproot: /absolute/path/only
-  #! sources_dir: /absolute/path/only
-  #! builds_dir: /absolute/path/only