chore: Remove V9 SDK API scripts and fixed project references

.github/file-filters.yml

@@ -74,7 +74,6 @@ run_api_stability_for_prs: &run_api_stability_for_prs
 
   # API files
   - "sdk_api.json"
-  - "sdk_api_v9.json"
 
   # Build configuration
   - "Makefile"

.github/workflows/api-stability.yml

@@ -38,9 +38,6 @@ jobs:
     if: needs.files-changed.outputs.run_api_stability_for_prs == 'true'
     needs: files-changed
     runs-on: macos-15
-    strategy:
-      matrix:
-        version: [default, v9]
     steps:
       - name: Checkout code
         uses: actions/checkout@v5
@@ -49,14 +46,8 @@ jobs:
 
       - name: Generate HEAD SDK
         run: |
-          if [ "${{ matrix.version }}" = "v9" ]; then
-            mv sdk_api_v9.json sdk_api_base.json
-            ./scripts/update-api.sh V9
-            mv sdk_api_v9.json sdk_api.json
-          else
-            mv sdk_api.json sdk_api_base.json
-            ./scripts/update-api.sh
-          fi
+          mv sdk_api.json sdk_api_base.json
+          ./scripts/update-api.sh
 
       - name: Diagnose breaking changes
         run: |
@@ -84,11 +75,7 @@ jobs:
   # So, we don't have to run API stability checks, for example, for Changelog or ReadMe changes.
 
   api-stability-required-check:
-    needs:
-      [
-        files-changed,
-        api-stability,
-      ]
+    needs: [files-changed, api-stability]
     name: API Stability
     # This is necessary since a failed/skipped dependent job would cause this job to be skipped
     if: always()

Makefile

@@ -88,7 +88,6 @@ format-yaml:
 
 generate-public-api:
 	./scripts/update-api.sh
-	./scripts/update-api.sh V9
 
 ## Current git reference name
 GIT-REF := $(shell git rev-parse --abbrev-ref HEAD)