Refactoring quantized op tests to combine test classes (#68282)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68282
Combined 3 Dynamic quantized op test classes into 1
Test Plan:
python test/test_quantization.py TestDynamicQuantizedOps
Imported from OSS
Reviewed By: jerryzh168
Differential Revision: D32402163
fbshipit-source-id: 696b7ef5d823632941dc7afc95161501445d0e18
