Remove @neonichu from CODEOWNERS (#7342)

Seems like a good time to ship this since I am wrapping up my last few
PRs and this way I don't get added as reviewer to new PRs which will set
the correct expectation that I won't be doing any future code reviews.

Author: neonichu

CODEOWNERS

@@ -8,10 +8,6 @@
 # (W), PGP key ID and fingerprint (P), description (D), and snail-mail address
 # (S).
 
-# N: Boris Buegling
-# E: [email protected]
-# D: Package Manager
-
 # N: Tomer Doron
 # E: [email protected]
 # D: Package Manager
@@ -28,4 +24,4 @@
 
 # The following lines are used by GitHub to automatically recommend reviewers.
 
-* @bnbarham @MaxDesiatov @neonichu @tomerd
+* @bnbarham @MaxDesiatov @tomerd