Update CODEOWNERS (#6489)

* Update CODEOWNERS

* Cleanup CODEOWNERS

* Remove myself as a code owner

I don’t work on consensus anymore.

* Update CODEOWNERS

Co-authored-by: Sergei Shulepov <sergei@parity.io>
Co-authored-by: Demi M. Obenour <demi@parity.io>
Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

substrate/docs/CODEOWNERS

@@ -18,15 +18,7 @@
 #   are more recognizable on GitHub, you can use them for mentioning unlike an email.
 # - The latest matching rule, if multiple, takes precedence.
 
-# Wasm execution and the wasm side of Substrate Runtime Interface
-/client/executor/ @pepyakin
-/primitives/io/ @pepyakin @NikVolf
-
-# Crypto, execution extensions, etc.
-/primitives/core/ @NikVolf
-
 # Block production
-/primitives/authorship/ @NikVolf
 /client/basic-authorship/ @NikVolf
 
 # Sandboxing capability of Substrate Runtime
@@ -48,22 +40,21 @@
 /primitives/rpc/ @tomusdrw
 
 # GRANDPA, BABE, consensus stuff
-/frame/babe/ @andresilva @DemiMarie-parity
+/frame/babe/ @andresilva
 /frame/grandpa/ @andresilva
 /client/finality-grandpa/ @andresilva
-/client/consensus/babe/ @andresilva @DemiMarie-parity
-/client/consensus/slots/ @andresilva @DemiMarie-parity
+/client/consensus/babe/ @andresilva
+/client/consensus/slots/ @andresilva
 /client/consensus/pow/ @sorpaas
 /primitives/consensus/pow/ @sorpaas
 
 # Contracts
 /frame/contracts/ @pepyakin
-/frame/contracts/src/wasm/runtime.rs @Robbepop
 
 # EVM
 /frame/evm/ @sorpaas
 
-# NPoS and Governance and Phragmén
+# NPoS and election 
 /frame/staking/ @kianenigma
 /frame/elections/ @kianenigma
 /frame/elections-phragmen/ @kianenigma
@@ -72,14 +63,8 @@
 # Fixed point arithmetic
 /primitives/sp-arithmetic/ @kianenigma
 
-# End to end testing of substrate node
-/bin/node/executor/ @kianenigma
-
 # Transaction weight stuff
-/frame/support/src/weights.rs @kianenigma
-
-# Support crates
-/frame/support/ @kianenigma
+/frame/support/src/weights.rs @shawntabrizi
 
 # Authority discovery
 /client/authority-discovery/ @mxinden