Rebuilding on every test invocation to prevent using wrong cached build

Author: BujSet

.ci/scripts/test_model.sh

@@ -148,9 +148,7 @@ test_model_with_xnnpack() {
     # TODO eventually buck should also use consolidated executor runners
     buck2 run //examples/xnnpack:xnn_executor_runner -- --model_path "${OUTPUT_MODEL_PATH}"
   elif [[ "${BUILD_TOOL}" == "cmake" ]]; then
-    if [[ ! -f ${CMAKE_OUTPUT_DIR}/executor_runner ]]; then
-      build_cmake_executor_runner "XNNPACK"
-    fi
+    build_cmake_executor_runner "XNNPACK"
     ./${CMAKE_OUTPUT_DIR}/executor_runner --model_path "${OUTPUT_MODEL_PATH}"
   else
     echo "Invalid build tool ${BUILD_TOOL}. Only buck2 and cmake are supported atm"