Hadrian bootstrap backport: update gitlab-ci.yml

Some of the other changes (e.g. reinstallable ghc) have not been
backported to the ghc-9.2 branch, so we remove those CI jobs.

.gitlab-ci.yml

@@ -929,57 +929,6 @@ nightly-x86_64-linux-deb10-llvm:
     BUILD_FLAVOUR: perf-llvm
     TEST_ENV: "x86_64-linux-deb10-llvm"
 
-####################################
-# Testing reinstallable ghc codepath
-####################################
-
-test-cabal-reinstall-x86_64-linux-deb10:
-  extends: .validate-linux-hadrian
-  stage: full-build
-  before_script:
-    - ./boot
-    - ./configure
-    - "cabal update --index=$HACKAGE_INDEX_STATE --project-file=cabal.project-reinstall"
-  variables:
-    REINSTALL_GHC: "yes"
-    BUILD_FLAVOUR: validate
-    TEST_ENV: "x86_64-linux-deb10-cabal-install"
-  rules:
-    - if: '$CI_MERGE_REQUEST_LABELS !~ /.*fast-ci.*/'
-
-#################################
-# x86_64-linux-deb11
-#################################
-
-.build-x86_64-linux-deb11:
-  extends: .validate-linux
-  image: "registry.gitlab.haskell.org/ghc/ci-images/x86_64-linux-deb11:$DOCKER_REV"
-  variables:
-    TEST_ENV: "x86_64-linux-deb11"
-    BIN_DIST_PREP_TAR_COMP: "./ghc-x86_64-deb11-linux.tar.xz"
-  cache:
-    key: linux-x86_64-deb11-$CACHE_REV
-
-# Disabled to reduce CI load
-.validate-x86_64-linux-deb11:
-  extends: .build-x86_64-linux-deb11
-  stage: full-build
-  artifacts:
-    when: always
-    expire_in: 2 week
-
-release-x86_64-linux-deb11:
-  <<: *release
-  extends: .build-x86_64-linux-deb11
-  stage: full-build
-
-nightly-x86_64-linux-deb11:
-  <<: *nightly
-  extends: .build-x86_64-linux-deb11
-  stage: full-build
-  variables:
-    TEST_TYPE: slowtest
-
 #################################
 # x86_64-linux-ubuntu 20.04
 #################################