maint: remove myself from maintainers (#6434)

maint: remove myself from maintainers
maint: add Qi Chen into Emeritus

Signed-off-by: George Chen <qchea@amazon.com>

Author: chenqi0805

.github/CODEOWNERS

@@ -1,2 +1,2 @@
 # This should match the owning team set up in https://github.com/orgs/opensearch-project/teams
-*   @sb2k16 @chenqi0805 @engechas @san81 @srikanthjg @graytaylor0 @dinujoh @kkondaka @KarstenSchnitter @dlvenable @oeyh
+*   @sb2k16 @engechas @san81 @srikanthjg @graytaylor0 @dinujoh @kkondaka @KarstenSchnitter @dlvenable @oeyh

MAINTAINERS.md

@@ -7,7 +7,6 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Maintainer             | GitHub ID                                                 | Affiliation |
 | ---------------------- | --------------------------------------------------------- | ----------- |
 | Souvik Bose            | [sb2k16](https://github.com/sb2k16)               | Amazon      |
-| Qi Chen                | [chenqi0805](https://github.com/chenqi0805)               | Amazon      |
 | Chase Engelbrecht      | [engechas](https://github.com/engechas)                   | Amazon      |
 | Santhosh Gandhe        | [san81](https://github.com/san81)             | Amazon      |
 | Srikanth Govindarajan  | [srikanthjg](https://github.com/srikanthjg)             | Amazon      |
@@ -29,3 +28,4 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | David Powers           | [dapowers87](https://github.com/dapowers87)           | Amazon      |
 | Shivani Shukla         | [sshivanii](https://github.com/sshivanii)             | Amazon      |
 | Phill Treddenick       | [treddeni-amazon](https://github.com/treddeni-amazon) | Amazon      |
+| Qi Chen                | [chenqi0805](https://github.com/chenqi0805)           | Amazon      |