Remove dead release scripts (#4496)

* Remove redundant `pre-release.sh` script

This is now a no-op (there are no `matrix_lib` fields in package.json), so we
may as well remove it.

* Remove redundant `post-merge-master` script

Just as pre-release is a no-op, so is this

* Remove redundant switch_package_to_release script

Once more: this script is a no-op.

.github/workflows/release-gitflow.yml

@@ -49,9 +49,6 @@ jobs:
                   git checkout develop
                   git merge -X ours master
 
-            - name: Run post-merge-master script to revert package.json fields
-              run: ./.action-repo/scripts/release/post-merge-master.sh
-
             - name: Reset dependencies
               if: inputs.dependencies
               run: |

.github/workflows/release-make.yml

@@ -158,11 +158,6 @@ jobs:
               env:
                   RELEASE_NOTES: ${{ steps.draft-release.outputs.body }}
 
-            - name: Run pre-release script to update package.json fields
-              run: |
-                  ./.action-repo/scripts/release/pre-release.sh
-                  git add package.json
-
             - name: Commit changes
               run: git commit -m "$VERSION"
 

.github/workflows/static_analysis.yml

@@ -26,16 +26,6 @@ jobs:
             - name: Typecheck
               run: "yarn run lint:types"
 
-            - name: Switch js-sdk to release mode
-              run: |
-                  scripts/switch_package_to_release.js
-                  yarn install
-                  yarn run build:compile
-                  yarn run build:types
-
-            - name: Typecheck (release mode)
-              run: "yarn run lint:types"
-
     js_lint:
         name: "ESLint"
         runs-on: ubuntu-24.04