ci: remove artifact uploads during windows build

Resolves issues with artifact storage being full

.github/workflows/build-windows.yml

@@ -78,21 +78,3 @@ jobs:
         shell: pwsh
         working-directory: .
         run: gsutil setmeta -h "Cache-Control:no-cache, no-store, must-revalidate" gs://flowy-releases/llink/win32/x64/RELEASES
-
-      - name: Upload installers (debug artifact)
-        if: always()
-        uses: actions/upload-artifact@v4
-        with:
-          name: flowy-llink-windows-signed
-          path: js/desktop/out/make/**/*
-          if-no-files-found: warn
-
-      # When Squirrel reports a generic "Failed to sign", the real error from
-      # @electron/windows-sign is written to this log by the fake signtool stub.
-      - name: Upload signing log (on failure)
-        if: failure()
-        uses: actions/upload-artifact@v4
-        with:
-          name: electron-windows-sign-log
-          path: js/desktop/node_modules/electron-winstaller/vendor/electron-windows-sign.log
-          if-no-files-found: ignore