RFR: 8253824: Revert JDK-8253089 since VS warning C4307 has been disabled

[Aleksey Shipilev]

On Wed, 30 Sep 2020 08:09:39 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> This reverts commit 3f455f09dc738b7c76210c1080df2aaa8e19a19d.
> 
> Testing:
>  - [x] Linux x86_64 {fastdebug,release,slowdebug} builds
>  - [ ] Windows MSVC 2017 build (cannot test it locally)

@RealCLanger, @TheRealMDoerr: need your help to test Windows MSVC 2017 builds here. I (un)fortunately lost the build
capability with MSVC 2017.

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PR: https://git.openjdk.java.net/jdk/pull/426