README: Minor improvements (pytorch#56193)

Summary:
* Visual studio versions: clarify and shorten.
* Remove obsolete note about a bug that has been fixed.

Pull Request resolved: pytorch#56193

Reviewed By: albanD

Differential Revision: D27939766

Pulled By: ezyang

fbshipit-source-id: e142ec04ba98d5468f28ddf2e8bba5d99d3cfc26

Author: garymm

README.md

@@ -266,8 +266,8 @@ On Windows
 
 Choose Correct Visual Studio Version.
 
-Visual Studio upgrades are very often. Sometimes, there're regressions in some new versions.
-It'd best to use the same Visual Studio Version as [PyTorch CI's](https://github.com/pytorch/pytorch/blob/a1bd7918cc5a06cbef6c5178259bf0a7b5ab1ce3/.circleci/scripts/vs_install.ps1#L4).
+Sometimes there are regressions in new versions of Visual Studio, so
+it's best to use the same Visual Studio Version as [PyTorch CI's](https://github.com/pytorch/pytorch/blob/a1bd7918cc5a06cbef6c5178259bf0a7b5ab1ce3/.circleci/scripts/vs_install.ps1#L4).
 You can use Visual Studio Enterprise, Professional or Community though PyTorch CI uses Visual Studio BuildTools.
 
 Build with CPU
@@ -293,8 +293,6 @@ CUDA, MSVC, and PyTorch versions are interdependent; please install matching ver
 | 10.2         | Visual Studio 2019 (16.X) (`_MSC_VER` < 1930)           |  1.5.0 ~ 1.7.0  |
 | 11.0         | Visual Studio 2019 (16.X) (`_MSC_VER` < 1930)           |      1.7.0      |
 
-Note: There's a [compilation issue](https://github.com/oneapi-src/oneDNN/issues/812) in several Visual Studio 2019 versions since 16.7.1, so please make sure your Visual Studio 2019 version is not in 16.7.1 ~ 16.7.5
-
 Additional libraries such as
 [Magma](https://developer.nvidia.com/magma), [oneDNN, a.k.a MKLDNN or DNNL](https://github.com/oneapi-src/oneDNN), and [Sccache](https://github.com/mozilla/sccache) are often needed. Please refer to the [installation-helper](https://github.com/pytorch/pytorch/tree/master/.jenkins/pytorch/win-test-helpers/installation-helpers) to install them.