Stop running circleci checks (#4192)

Author: GaAstDev

.circleci/config.yml

@@ -105,8 +105,6 @@ def create_genesis_state(spec, validator_balances, activation_threshold):
 
 - Update [GitHub Actions config](https://github.com/ethereum/consensus-specs/blob/dev/.github/workflows/run-tests.yml)
     - Update `pyspec-tests.strategy.matrix.version` list by adding new feature to it
-- Update [CircleCI config](https://github.com/ethereum/consensus-specs/blob/dev/.circleci/config.yml)
-    - Add new job to the `workflows.test_spec.jobs`
 
 ## Others
 

docs/docs/new-feature.md

@@ -182,9 +182,7 @@ To add a new test generator that builds `New Tests`:
  By adding the base generator to your requirements, you can make a generator really easily. See docs below.
 4. Your generator is called with `-o some/file/path/for_testing/can/be_anything --preset-list mainnet minimal`.
  The base generator helps you handle this; you only have to define test case providers.
-5. Finally, add any linting or testing commands to the
- [circleci config file](../../.circleci/config.yml) if desired to increase code quality.
- Or add it to the [`Makefile`](../../Makefile), if it can be run locally.
+5. Finally, add any linting or testing commands to the [`Makefile`](../../Makefile), if it can be run locally.
 
 *Note*: You do not have to change the makefile.
 However, if necessary (e.g. not using Python, or mixing in other languages), submit an issue, and it can be a special case.