Revert last 3 PRs for adding maintainers (#1233)

* Revert "Adding new maintainers codeowners file also (#1222)"

This reverts commit 5f00942.

Signed-off-by: Kshitij Tandon <tandonks@amazon.com>

* Revert "Adding maintainer for the repo (#1221)"

This reverts commit 30a40e6.

Signed-off-by: Kshitij Tandon <tandonks@amazon.com>

* Revert "Updating maintainers list (#1192)"

This reverts commit bf6bb44.

Signed-off-by: Kshitij Tandon <tandonks@amazon.com>

---------

Signed-off-by: Kshitij Tandon <tandonks@amazon.com>

.github/CODEOWNERS

@@ -1 +1 @@
-*   @bowenlan-amzn @Hailong-am @RamakrishnaChilaka @vikasvb90 @SuZhou-Joe @tandonks @shiv0408 @soosinha
+*   @bowenlan-amzn @Hailong-am @RamakrishnaChilaka @vikasvb90 @SuZhou-Joe

MAINTAINERS.md

@@ -11,9 +11,6 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Ramakrishna Chilaka   | [RamakrishnaChilaka](https://github.com/RamakrishnaChilaka)  | Amazon      |
 | Vikas Bansal          | [vikasvb90](https://github.com/vikasvb90)                    | Amazon      |
 | Zhou Su               | [SuZhou-Joe](https://github.com/SuZhou-Joe)                  | Amazon      |
-| Kshitij Tandon        | [tandonks](https://github.com/tandonks)                      | Amazon      |
-| Shivansh Arora        | [shiv0408](https://github.com/shiv0408)                      | Amazon      |
-| Sooraj Sinha          | [soosinha](https://github.com/soosinha)                      | Amazon      |
 
 ## Emeritus