Remove mtk part in jni

Author: kirklandsign

extension/android/jni/jni_layer_llama.cpp

@@ -13,7 +13,6 @@
 #include <unordered_map>
 #include <vector>
 
-#include <executorch/examples/mediatek/executor_runner/mtk_llama_runner.h>
 #include <executorch/examples/models/llama/runner/runner.h>
 #include <executorch/examples/models/llava/runner/llava_runner.h>
 #include <executorch/extension/llm/runner/image.h>