Retire Fedora 34

...since it isn't used anywhere.

Change-Id: I0b564115d79f0ea40c73ae7f93890f0d92676fce
diff --git a/zuul.yaml b/zuul.yaml
index 8605626..3139f12 100644
--- a/zuul.yaml
+++ b/zuul.yaml
@@ -31,106 +31,6 @@
           label: f38-small
     timeout: 120
 
-# Fedora 34
-- job:
-    name: run-ci-build-sh-f34
-    parent: run-ci-build-sh
-    nodeset:
-      nodes:
-        - name: w
-          label: f34
-
-- job:
-    name: f34-gcc
-    description: |
-      Build on Fedora 34 with GCC.
-    parent: run-ci-build-sh-f34
-    vars:
-      perform_extra_work: true
-
-- job:
-    name: f34-gcc-cover
-    description: |
-      Build on Fedora 34 with GCC and code coverage.
-    parent: f34-gcc
-    post-run: playbooks/coverage-diff/upload-one-report.yaml
-    provides: coverage-f34-gcc-new
-    vars:
-      coverage_xml_dir: "{{ ansible_user_dir }}/build"
-
-- job:
-    name: f34-gcc-cover-previous
-    description: |
-      Build previous version of sources on Fedora 34 with GCC and code coverage.
-    parent: f34-gcc-cover
-    pre-run: playbooks/coverage-diff/checkout-previous.yaml
-    provides: coverage-f34-gcc-old
-    voting: false
-    vars:
-      coverage_xml_dir: "{{ ansible_user_dir }}/build"
-
-- job:
-    name: f34-gcc-asan
-    description: |
-      Build on Fedora 34 with GCC and ASAN sanitizer.
-    parent: run-ci-build-sh-f34
-
-- job:
-    name: f34-gcc-asan-ubsan
-    description: |
-      Build on Fedora 34 with GCC and ASAN+UBSAN sanitizers.
-    parent: run-ci-build-sh-f34
-
-- job:
-    name: f34-clang
-    description: |
-      Build on Fedora 34 with clang.
-    parent: run-ci-build-sh-f34
-
-- job:
-    name: f34-clang-asan
-    description: |
-      Build on Fedora 34 with clang and ASAN sanitizer.
-    parent: run-ci-build-sh-f34
-
-- job:
-    name: f34-clang-asan-ubsan
-    description: |
-      Build on Fedora 34 with clang and ASAN+UBSAN sanitizers.
-    parent: run-ci-build-sh-f34
-
-- job:
-    name: f34-clang-tsan
-    description: |
-      Build on Fedora 34 with clang and TSAN thread sanitizer.
-    parent: run-ci-build-sh-f34
-
-- job:
-    name: f34-cpp-coverage-diff
-    description: |
-      Report how coverage changed compared to the previous state of the repo.
-    nodeset:
-      nodes:
-        - name: w
-          label: f34-small
-    timeout: 120
-    pre-run: playbooks/coverage-diff/prepare.yaml
-    run: playbooks/coverage-diff/generate.yaml
-    post-run: playbooks/coverage-diff/upload-diff.yaml
-    success-url: coverage-diff.html
-    failure-url: coverage-diff.html
-    requires:
-      - coverage-f34-gcc-old
-      - coverage-f34-gcc-new
-    dependencies:
-      - f34-gcc-cover
-      - f34-gcc-cover-previous
-    vars:
-      previous_source_prefix: "{{ ansible_user_dir }}/previous-src"
-      coverage_xml_dir: "{{ zuul.project.src_dir }}/cover"
-      coverage_job_name_previous: f34-gcc-cover-previous
-      coverage_job_name_current: f34-gcc-cover
-
 # Fedora 38
 - job:
     name: run-ci-build-sh-f38