Merge pull request #2040 from monojenkins/sync-pr-18512-from-mono
authorAleksey Kliger (λgeek) <alklig@microsoft.com>
Thu, 23 Jan 2020 18:59:28 +0000 (13:59 -0500)
committerGitHub <noreply@github.com>
Thu, 23 Jan 2020 18:59:28 +0000 (13:59 -0500)
Remove "handles" from System.Threading.Semaphore.

Co-Authored-By: Jay Krell <jaykrell@microsoft.com>

Trivial merge