clean up flatbuffers import

Author: neil-tan

tests/tflm/tflite_export/test_write.py

@@ -5,9 +5,8 @@
 from utensor_cgen.matcher import uTensorGraphMatcher
 from utensor_cgen.utils import prune_graph, topologic_order_graph
 from utensor_cgen.transformer import TFLiteExporter
-import flatbuffers
+import utensor_cgen.third_party.flatbuffers as flatbuffers
 import utensor_cgen.third_party.tflite as tflite
-from utensor_cgen.third_party.tflite import *
 from utensor_cgen.third_party.tflite.BuiltinOperator import BuiltinOperator
 from utensor_cgen.third_party.tflite.Model import Model
 from utensor_cgen.third_party.tflite.BuiltinOptions import BuiltinOptions

utensor_cgen/transformer/tflite_exporter.py

@@ -9,7 +9,6 @@
 from copy import deepcopy
 
 from utensor_cgen.ir import OperationInfo, uTensorGraph
-#import flatbuffers
 import utensor_cgen.third_party.flatbuffers as flatbuffers
 import utensor_cgen.third_party.tflite as tflite
 from utensor_cgen.third_party.tflite import *