area-PAL-Libraries merged into area-System.Runtime.InteropServices (#62180)

Past issues/PRs were re-tagged as area-System.Runtime.InteropServices and the issue labeler bot was retrained.

Author: jeffhandley

docs/area-owners.md

@@ -55,7 +55,6 @@ Note: Editing this file doesn't update the mapping used by the `@msftbot` issue
 | area-Microsoft.Win32                           | @ericstj      | @safern                                             | Including System.Windows.Extensions                                                                                                                                                                                                                                                       |
 | area-NativeAOT-coreclr                         | @agocke       | @MichalStrehovsky @jkotas                           |                                                                                                                                                                                                                                                                                           |
 | area-PAL-coreclr                               | @mangod9      | @janvorli                                           |                                                                                                                                                                                                                                                                                           |
-| area-PAL-libraries                             | @jeffhandley  | @bartonjs @GrabYourPitchforks                       |                                                                                                                                                                                                                                                                                           |
 | area-Performance-mono                          | @SamMonoRT    | @SamMonoRT                                          |                                                                                                                                                                                                                                                                                           |
 | area-R2RDump-coreclr                           | @mangod9      | @trylek                                             |                                                                                                                                                                                                                                                                                           |
 | area-ReadyToRun-coreclr                        | @mangod9      | @trylek                                             |                                                                                                                                                                                                                                                                                           |