No matrix needed in benchmarking apk build (#5339)

Summary:
Always build QNN

Pull Request resolved: #5339

Reviewed By: guangy10

Differential Revision: D62622483

Pulled By: kirklandsign

fbshipit-source-id: 3200b4f29e1044dcaa6b47b9a0a325b1569459c8

Author: kirklandsign

.github/workflows/android-perf.yml

@@ -208,10 +208,6 @@ jobs:
     name: build-llm-demo
     uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
     needs: set-parameters
-    strategy:
-      matrix:
-          delegate: ${{ fromJson(needs.set-parameters.outputs.delegates) }}
-      fail-fast: false
     with:
       runner: linux.2xlarge
       docker-image: executorch-ubuntu-22.04-clang12-android