ci(macrobenchmark): Drop unused submodule checkout and encryption key env

The repo has no submodules -- no .gitmodules, no gitlink entries -- so
submodules: 'recursive' does nothing; sentry-native-ndk is a Maven dependency
pinned in gradle/libs.versions.toml. GRADLE_ENCRYPTION_KEY is never read as
env.* or $GRADLE_ENCRYPTION_KEY either; setup-gradle takes the secret directly
via cache-encryption-key, which stays.

Author: runningcode

.github/workflows/integration-tests-macrobenchmark.yml

@@ -32,13 +32,10 @@ jobs:
     # we copy the secret to the env variable in order to access it in the workflow
     env:
       SAUCE_USERNAME: ${{ secrets.SAUCE_USERNAME }}
-      GRADLE_ENCRYPTION_KEY: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
 
     steps:
       - name: Git checkout
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        with:
-          submodules: 'recursive'
 
       - name: 'Set up Java: 17'
         uses: actions/setup-java@b6effb05e454b25005698d916606bdc6ffcbf961 # v5