chore: Remove documentation and package tests

.agents/skills/python-tests/SKILL.md

@@ -36,21 +36,6 @@ license: Apache-2.0
   ```
   Simply allow the resulting KeyError to be raised if the "data" key is not present in the results dictionary, as this will provide a clear indication of what went wrong in the test.
 
-## Packaging Metadata Tests
-
-When adapter installation metadata changes, assert the published composition
-directly:
-
-- The root project unconditionally depends on the exact-version
-  `nemo-fabric-runtime` distribution.
-- Each root harness extra delegates to the matching version of the leaf
-  adapter's `harness` extra.
-- Bare leaf dependencies remain adapter-owned, and the root `adapter-tests`
-  dependency group installs each leaf through its `harness` extra.
-- Every leaf provides `full`. Only adapters that import NeMo Relay Python APIs
-  provide `relay`; adapters that launch the Relay CLI install
-  `nemo-relay-cli-bin` through both `harness` and `full`.
-
 ## Common Commands
 
 ```bash
@@ -61,6 +46,12 @@ uv run pytest -k "<pattern>"
 uv run pytest
 ```
 
+## Do Not Write Tests For
+
+- Documentation.
+- Test helper code under `tests/_utils/`.
+- Package metadata or wheel installation behavior.
+
 ## References
 
 - `pyproject.toml`