Absorb the matrix-react-sdk repository (#28192)

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Co-authored-by: Florian Duros <florianduros@element.io>
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.github/workflows/docs.yml

@@ -30,12 +30,6 @@ jobs:
               with:
                   path: element-web
 
-            - name: Fetch matrix-react-sdk
-              uses: actions/checkout@v4
-              with:
-                  repository: element-hq/matrix-react-sdk
-                  path: matrix-react-sdk
-
             - name: Fetch matrix-js-sdk
               uses: actions/checkout@v4
               with:
@@ -52,7 +46,7 @@ jobs:
               working-directory: element-web
               run: |
                   yarn install --frozen-lockfile
-                  yarn ts-node ./scripts/gen-workflow-mermaid.ts ../element-desktop ../element-web ../matrix-react-sdk ../matrix-js-sdk > docs/automations.md
+                  yarn ts-node ./scripts/gen-workflow-mermaid.ts ../element-desktop ../element-web ../matrix-js-sdk > docs/automations.md
                   echo "-   [Automations](automations.md)" >> docs/SUMMARY.md
 
             - name: Setup mdBook
@@ -74,9 +68,6 @@ jobs:
                   mv element-web/docs/lib docs/
                   mv element-web/docs "docs/Element Web"
 
-                  mv matrix-react-sdk/README.md matrix-react-sdk/docs/
-                  mv matrix-react-sdk/docs "docs/Matrix React SDK"
-
                   mv matrix-js-sdk/README.md matrix-js-sdk/docs/
                   mv matrix-js-sdk/docs "docs/Matrix JS SDK"