Adding sean to codeowners (#506)

* Adding sean to codeowners

* Yang's username was wrong

* Yang's username was duped and must be removed

Author: sol-loup

.github/CODEOWNERS

@@ -5,4 +5,4 @@
 # the repo. Unless a later match takes precedence,
 # @global-owner1 and @global-owner2 will be requested for
 # review when someone opens a pull request.
-*       @zlik @dabramovici @sol-loup @camcuz97 @agmurari @yang17 @nrostrow-meta @dalongi @yangssr @palak-ana @n-nayak @singhramanpreett @luizmramosmeta @cristiannancumeta @singhalavi @jczhuoMeta
+*       @zlik @dabramovici @sol-loup @camcuz97 @agmurari @yang17 @nrostrow-meta @dalongi @palak-ana @n-nayak @singhramanpreett @luizmramosmeta @cristiannancumeta @singhalavi @jczhuoMeta @swinard-meta