Delete the add version picker GHA workflow (#9453)

Added in https://github.com/matrix-org/synapse/pull/16533, this workflow
was intended to be run once to add the version picker to all historical
versions of the https://matrix-org.github.io/synapse documentation
website.

Note that the latest version of the docs built from this repo now exist
at https://element-hq.github.io/synapse/.

The workflow has been run successfully and the version picker was added
to the documentation. Thus we can now delete this workflow.

---

Note: Do not confuse this PR with
https://github.com/matrix-org/synapse/issues/9453. This PR was made
while we were populating this repo with "Dummy issues" after the
changeover from matrix-org/synapse to element-hq/synapse - therefore
referencing this PR may cause some confusion.

2 files changed, 1 insertions, 90 deletions

diff --git a/.github/workflows/docs-add-version-picker.yaml b/.github/workflows/docs-add-version-picker.yaml
deleted file mode 100644
index 717d5c85d3..0000000000
--- a/.github/workflows/docs-add-version-picker.yaml
+++ /dev/null
@@ -1,90 +0,0 @@
-name: Add Version Picker (RUN ONCE)
-
-on:
-  workflow_dispatch:
-
-jobs:
-  add-version-picker:
-    name: Add Version Picker
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Configure Git
-        run: |
-          git config user.email "action@synapse.bot.com"
-          git config user.name "Action Bot"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Setup mdbook
-        uses: peaceiris/actions-mdbook@adeb05db28a0c0004681db83893d56c0388ea9ea # v1.2.0
-        with:
-          mdbook-version: '0.4.17'
-
-      - name: Copy files to release branches
-        run: |
-          for version in "v1.98" "v1.97" "v1.96" "v1.95" "v1.94" "v1.93" "v1.92" "v1.91" "v1.90" "v1.89" "v1.88" "v1.87" "v1.86" "v1.85" "v1.84" "v1.83" "v1.82" "v1.81" "v1.80" "v1.79" "v1.78" "v1.77" "v1.76" "v1.75" "v1.74" "v1.73" "v1.72" "v1.71" "v1.70" "v1.69" "v1.68" "v1.67" "v1.66" "v1.65" "v1.64" "v1.63" "v1.62" "v1.61" "v1.60" "v1.59" "v1.58" "v1.57" "v1.56" "v1.55" "v1.54" "v1.53" "v1.52" "v1.51" "v1.50" "v1.49" "v1.48" "v1.47" "v1.46" "v1.45" "v1.44" "v1.43" "v1.42" "v1.41" "v1.40" "v1.39" "v1.38" "v1.37"
-          do
-            git fetch
-            git checkout -b release-$version origin/release-$version
-
-            git checkout develop -- ./book.toml
-            git checkout develop -- ./docs/website_files/version-picker.js
-            git checkout develop -- ./docs/website_files/version-picker.css
-            git checkout develop -- ./docs/website_files/README.md
-
-            echo "window.SYNAPSE_VERSION = '$version';" > ./docs/website_files/version.js
-
-            # Adding version-picker element to index.hbs
-            awk '/<button id="search-toggle" class="icon-button" type="button" title="Search. \(Shortkey: s\)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">/{
-                print; getline; print; getline; print; getline; print;
-                print "\
-                                  <div class=\"version-picker\">\n\
-                                      <div class=\"dropdown\">\n\
-                                          <div class=\"select\">\n\
-                                              <span></span>\n\
-                                              <i class=\"fa fa-chevron-down\"></i>\n\
-                                          </div>\n\
-                                          <input type=\"hidden\" name=\"version\">\n\
-                                          <ul class=\"dropdown-menu\">\n\
-                                              <!-- Versions will be added dynamically in version-picker.js -->\n\
-                                          </ul>\n\
-                                      </div>\n\
-                                  </div>\
-                ";
-                next
-            } 1' ./docs/website_files/theme/index.hbs > output.html && mv output.html ./docs/website_files/theme/index.hbs
-
-            git add ./book.toml ./docs/website_files/version-picker.js ./docs/website_files/version-picker.css ./docs/website_files/version.js ./docs/website_files/README.md ./docs/website_files/theme/index.hbs
-            git commit -m "Version picker added for $version docs"
-            git push
-          done
-
-      - name: Build docs for Github Pages
-        run: |
-          git fetch
-          git branch gh-pages origin/gh-pages
-
-          for version in "v1.98" "v1.97" "v1.96" "v1.95" "v1.94" "v1.93" "v1.92" "v1.91" "v1.90" "v1.89" "v1.88" "v1.87" "v1.86" "v1.85" "v1.84" "v1.83" "v1.82" "v1.81" "v1.80" "v1.79" "v1.78" "v1.77" "v1.76" "v1.75" "v1.74" "v1.73" "v1.72" "v1.71" "v1.70" "v1.69" "v1.68" "v1.67" "v1.66" "v1.65" "v1.64" "v1.63" "v1.62" "v1.61" "v1.60" "v1.59" "v1.58" "v1.57" "v1.56" "v1.55" "v1.54" "v1.53" "v1.52" "v1.51" "v1.50" "v1.49" "v1.48" "v1.47" "v1.46" "v1.45" "v1.44" "v1.43" "v1.42" "v1.41" "v1.40" "v1.39" "v1.38" "v1.37"
-          do
-            git checkout release-$version
-
-            mdbook build && cp book/welcome_and_overview.html book/index.html
-            mkdir ver-temp && cp -r book/* ver-temp/
-            rm -r ./book
-
-            git checkout gh-pages
-            rm -r $version
-            mv ver-temp $version
-
-            git add ./$version
-            git commit -m "Version picker deployed for $version docs to Github Pages"
-          done
-
-      - name: Push to gh-pages
-        run: |
-          git checkout gh-pages
-          git status
-          git push
\ No newline at end of file
diff --git a/changelog.d/9453.misc b/changelog.d/9453.misc
new file mode 100644
index 0000000000..73656104cf
--- /dev/null
+++ b/changelog.d/9453.misc
@@ -0,0 +1 @@
+Remove run-once workflow after adding the version picker to the documentation.
\ No newline at end of file