pytorch

04369f63 - quant: rename _ObserverBase to UniformQuantizationObserverBase (#76461)

quant: rename _ObserverBase to UniformQuantizationObserverBase (#76461) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/76461 Renaming as the old name was confusing. The name represents better what this class is doing. Test Plan: CI Reviewed By: jerryzh168 Differential Revision: D35976350 Pulled By: vkuzo fbshipit-source-id: 6da6c1767cec729c3959b13ae9dd939d0b2f622c (cherry picked from commit 065608ef42c599525bfad4603af74c5bdf0881c3)