Sempahore's OpenExisting and TryOpenExisting do not throw DirectoryNotFoundException

Author: Koundinya Veluri

xml/System.Threading/Semaphore.xml

@@ -629,7 +629,6 @@ There was some other error. The `HResult` property may provide more information.
 -or-
 
 There was some other error. The `HResult` property may provide more information.</exception>
-        <exception cref="T:System.IO.DirectoryNotFoundException">Windows only: <paramref name="name" /> specified an unknown namespace. See https://docs.microsoft.com/windows/win32/sync/object-names for more information. For cross-platform compatibility, use <see cref="T:System.IO.IOException"/> instead.</exception>
         <exception cref="T:System.IO.PathTooLongException">The <paramref name="name" /> is too long. Length restrictions may depend on the operating system or configuration.</exception>
         <exception cref="T:System.UnauthorizedAccessException">The named semaphore exists, but the user does not have the security access required to use it.</exception>
         <related type="Article" href="/dotnet/standard/threading/">Managed Threading</related>
@@ -714,7 +713,6 @@ There was some other error. The `HResult` property may provide more information.
 -or-
 
 There was some other error. The `HResult` property may provide more information.</exception>
-        <exception cref="T:System.IO.DirectoryNotFoundException">Windows only: <paramref name="name" /> specified an unknown namespace. See https://docs.microsoft.com/windows/win32/sync/object-names for more information. For cross-platform compatibility, use <see cref="T:System.IO.IOException"/> instead.</exception>
         <exception cref="T:System.IO.PathTooLongException">The <paramref name="name" /> is too long. Length restrictions may depend on the operating system or configuration.</exception>
         <exception cref="T:System.UnauthorizedAccessException">The named semaphore exists, but the user does not have the desired security access rights.</exception>
         <related type="Article" href="/dotnet/standard/threading/">Managed Threading</related>