Update code owners to not assign Andrew and Zsolt as reviewers

We have changed our process to not assign any reviewer autoamtically but
to only do so manually if that is desired.

.github/CODEOWNERS

@@ -1,6 +1,5 @@
 # https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners
 # Order is important; the last matching pattern takes the most precedence.
 
-*                                 @dutow @dAdAbird
 /contrib/pg_tde/documentation/    @nastena1606 @Andriciuc
 /.github/                         @artemgavrilov