Revert "gen_micro_mutable script: update import path" (#2556)

Reverts tensorflow/tflite-micro#2545

BUG=broke some internal scripts.

tensorflow/lite/micro/tools/gen_micro_mutable_op_resolver/generate_micro_mutable_op_resolver_from_model.py

diff --git a/tensorflow/lite/micro/tools/gen_micro_mutable_op_resolver/generate_micro_mutable_op_resolver_from_model.py b/tensorflow/lite/micro/tools/gen_micro_mutable_op_resolver/generate_micro_mutable_op_resolver_from_model.py
index 5c91f31..b7fbd9a 100644
--- a/tensorflow/lite/micro/tools/gen_micro_mutable_op_resolver/generate_micro_mutable_op_resolver_from_model.py
+++ b/tensorflow/lite/micro/tools/gen_micro_mutable_op_resolver/generate_micro_mutable_op_resolver_from_model.py
@@ -1,4 +1,4 @@
-# Copyright 2024 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2023 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@
 from absl import flags
 from mako import template
 
-from tensorflow.lite.tools import visualize as visualize
+from tflite_micro.tensorflow.lite.tools import visualize as visualize
 
 TEMPLATE_DIR = os.path.join(os.path.dirname(__file__), 'templates')
 TEMPLATE_DIR = os.path.abspath(TEMPLATE_DIR)