ci: remove unneeded push_to_github job

.gitlab-ci.yml

@@ -1,5 +1,4 @@
 stages:
-  - deploy
   - check
 
 check_lib_reversion:
@@ -13,33 +12,3 @@ check_lib_reversion:
   script:
     - for dir in esp32 esp32s2 esp32s3; do test $(xtensa-esp32-elf-nm $dir/*.a | grep -w printf | wc -l) -eq 0; done;
     - for dir in esp32 esp32s2 esp32s3; do test $(xtensa-esp32-elf-nm $dir/*.a | grep -w ets_printf | wc -l) -eq 0; done;
-
-
-push_master_to_github:
-  stage: deploy
-  tags:
-    - github_sync
-  only:
-    - master
-    - /^release\/v/
-#  when: on_success
-  image: $CI_DOCKER_REGISTRY/esp32-ci-env
-  variables:
-    GIT_STRATEGY: clone
-    GITHUB_PUSH_REFS: refs/remotes/origin/release refs/remotes/origin/master
-  script:
-    - mkdir -p ~/.ssh
-    - chmod 700 ~/.ssh
-    - echo -n $GH_PUSH_KEY > ~/.ssh/id_rsa_base64
-    - base64 --decode --ignore-garbage ~/.ssh/id_rsa_base64 > ~/.ssh/id_rsa
-    - chmod 600 ~/.ssh/id_rsa
-    - echo -e "Host github.com\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
-    - git remote add github [email protected]:espressif/esp-phy-lib.git
-    # What the next line of script does: goes through the list of refs for all branches we push to github,
-    # generates a snippet of shell which is evaluated. The snippet checks CI_BUILD_REF against the SHA
-    # (aka objectname) at tip of each branch, and if any SHAs match then it checks out the local branch
-    # and then pushes that ref to a corresponding github branch
-    #
-    # NB: In gitlab 9.x, CI_BUILD_REF was deprecated. New name is CI_COMMIT_REF. If below command suddenly
-    # generates bash syntax errors, this is probably why.
-    - eval $(git for-each-ref --shell bash --format 'if [ $CI_BUILD_REF == %(objectname) ]; then git checkout -B %(refname:strip=3); git push --follow-tags github %(refname:strip=3); fi;' $GITHUB_PUSH_REFS)