test: move 4844 tests to sim tests (#6622)

* Remove old 4844 sim test

* Add support for 4844 tests in sim tests

* Fix file path

* Fix merge conflict issue

.github/workflows/test-sim-merge.yml

@@ -71,18 +71,6 @@ jobs:
           ENGINE_PORT: 8551
           ETH_PORT: 8661
 
-      # Enable the blob sims when stable images
-      # - name: Pull ethereumjs blobs
-      #   run: docker pull $ETHEREUMJS_BLOBS_IMAGE
-
-      # - name: Test Lodestar <> ethereumjs blobs
-      #   run: yarn test:sim:blobs
-      #   working-directory: packages/beacon-node
-      #   env:
-      #     EL_BINARY_DIR: ${{ env.ETHEREUMJS_BLOBS_IMAGE }}
-      #     EL_SCRIPT_DIR: ethereumjsdocker
-      #     DEV_RUN: true
-
       - name: Upload debug log test files
         if: ${{ always() }}
         uses: actions/upload-artifact@v4