Use pinned iree-tools-tflite in benchmarks (#13057)

Use pinned `iree-tools-tflite` to import tflite models for benchmarks
and drop the build dependency on `build_tf_integrations`.

Doc to explain how to bump tf/tflite importer for benchmarks will be
added in a follow-up change #13065
diff --git a/build_tools/cmake/build_e2e_test_artifacts.sh b/build_tools/cmake/build_e2e_test_artifacts.sh
index f10a51f..8ae8bf1 100755
--- a/build_tools/cmake/build_e2e_test_artifacts.sh
+++ b/build_tools/cmake/build_e2e_test_artifacts.sh
@@ -26,10 +26,9 @@
 
 BUILD_DIR="${1:-${IREE_BUILD_E2E_TEST_ARTIFACTS_DIR:-build-e2e-test-artifacts}}"
 IREE_HOST_BIN_DIR="$(realpath ${IREE_HOST_BIN_DIR})"
-IREE_TF_BINARIES_DIR="${IREE_TF_BINARIES_DIR:-integrations/tensorflow/bazel-bin/iree_tf_compiler}"
 
 source build_tools/cmake/setup_build.sh
-source build_tools/cmake/setup_local_python.sh
+source build_tools/cmake/setup_tf_python.sh
 
 echo "Configuring to build e2e test artifacts"
 "${CMAKE_BIN}" -B "${BUILD_DIR}" \
@@ -40,8 +39,7 @@
   -DIREE_BUILD_E2E_TEST_ARTIFACTS=ON \
   -DIREE_BUILD_COMPILER=OFF \
   -DIREE_BUILD_SAMPLES=OFF \
-  -DIREE_BUILD_TESTS=OFF \
-  -DIREE_IMPORT_TFLITE_PATH="${IREE_TF_BINARIES_DIR}/iree-import-tflite"
+  -DIREE_BUILD_TESTS=OFF
 
 echo "Building e2e test artifacts"
 "${CMAKE_BIN}" \