Remove unused lines in build_android_library.sh (#10088)

For CI, check out recursively.

Author: kirklandsign

.github/workflows/_android.yml

@@ -14,7 +14,7 @@ jobs:
     with:
       runner: linux.2xlarge
       docker-image: executorch-ubuntu-22.04-clang12-android
-      submodules: 'true'
+      submodules: 'recursive'
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
       timeout: 90
       upload-artifact: android-apps

.github/workflows/android-perf.yml

@@ -345,7 +345,7 @@ jobs:
     with:
       runner: linux.2xlarge
       docker-image: executorch-ubuntu-22.04-clang12-android
-      submodules: 'true'
+      submodules: 'recursive'
       ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
       timeout: 90
       upload-artifact: android-apps

.github/workflows/android-release-artifacts.yml

@@ -45,7 +45,7 @@ jobs:
       secrets-env: EXECUTORCH_MAVEN_SIGNING_KEYID EXECUTORCH_MAVEN_SIGNING_PASSWORD EXECUTORCH_MAVEN_CENTRAL_PASSWORD EXECUTORCH_MAVEN_CENTRAL_USERNAME EXECUTORCH_MAVEN_SIGNING_GPG_KEY_CONTENTS
       runner: linux.2xlarge
       docker-image: executorch-ubuntu-22.04-clang12-android
-      submodules: 'true'
+      submodules: 'recursive'
       ref: ${{ github.sha }}
       timeout: 90
       upload-artifact: android-apps

scripts/build_android_library.sh

@@ -65,11 +65,6 @@ build_android_native_library() {
   fi
   cmake --build "${CMAKE_OUT}" -j "${CMAKE_JOBS}" --target install --config "${EXECUTORCH_CMAKE_BUILD_TYPE}"
 
-  # Update tokenizers submodule
-  pushd extension/llm/tokenizers
-  echo "Update tokenizers submodule"
-  git submodule update --init
-  popd
   cmake extension/android \
     -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK}/build/cmake/android.toolchain.cmake \
     -DANDROID_ABI="${ANDROID_ABI}" \