[quant] fix reduce_range warning (#71027)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71027
Fix issue #61054. remove warning
reduce_range=True which caused the error message "UserWarning: Please use quant_min and quant_max to specify the range for observers".
Test Plan:
python test/test_quantization.py TestFakeQuantizeOps
Imported from OSS
Reviewed By: jerryzh168
Differential Revision: D33484341
fbshipit-source-id: 97c3d4658926183f88a0c4665451dd7f913d30e6
