chore: remove out-of-scope benchmark/CI/docs files from PR

Benchmark CI workflow, Dockerfiles, benchmark docs, evaluation smoke-test
doc, and dispatch tests belong in a separate PR. Scope this PR to the
async env init changes only.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/source/_toctree.yml

@@ -73,8 +73,6 @@
     title: Control & Train Robots in Sim (LeIsaac)
   title: "Simulation"
 - sections:
-  - local: evaluation
-    title: Evaluation (lerobot-eval)
   - local: adding_benchmarks
     title: Adding a New Benchmark
   - local: libero