Update onnx_model_zoo_validated_vision_unique.txt (nod-ai#467)

Removed 3 model which was causing hang in CI but running fine locally.
will debug it separately
nod-ai#466

Author: pdhirajkumarprasad

alt_e2eshark/onnx_tests/models/external_lists/onnx_model_zoo_validated_vision_unique.txt

@@ -100,9 +100,6 @@ MaskRCNN-12
 MaskRCNN-12-int8
 MaskRCNN-10
 MaskRCNN-12-qdq
-ResNet101-DUC-12
-ResNet101-DUC-7
-ResNet101-DUC-12-int8
 retinanet-9
 ssd-12-int8
 ssd-10