Move Lucas and Xermicus to Emeritus Maintainers (#1819)

Xermicus made huge improvements to the Polkadot target. Lucas made huge
improvements to the Solana target and optimization passes of the
compiler.

We thank both for their code contributions and their many ideas. We hope
to see you again.

Signed-off-by: Sean Young <sean@mess.org>

CODEOWNERS

@@ -1,11 +1,8 @@
 # SPDX-License-Identifier: Apache-2.0
 
-* @seanyoung @xermicus @LucasSte @salaheldinsoliman
-src/emit/polkadot/ @xermicus
-src/emit/solana/ @LucasSte @seanyoung
+* @seanyoung @salaheldinsoliman
+src/emit/solana/ @seanyoung
 src/emit/soroban/ @salaheldinsoliman
-integration/polkadot/ @xermicus
-integration/subxt-tests/ @xermicus
-integration/solana/ @LucasSte @seanyoung
-integration/anchor/ @LucasSte @seanyoung
+integration/solana/ @seanyoung
+integration/anchor/ @seanyoung
 integration/soroban/ @salaheldinsoliman

MAINTAINERS.md

@@ -3,7 +3,11 @@
 ### Active Maintainers
 | name              | Github    | Discord        |
 |-------------------|-----------|----------------|
-| Sean Young        | [@seanyoung](https://github.com/seanyoung) | seanyoung#0481 |
+| Sean Young        | [@seanyoung](https://github.com/seanyoung) | seanyoung |
+| Salaheldin Soliman| [@salaheldinsoliman](https://github.com/salaheldinsoliman) | salaheldinsoliman  |
+
+### Emeritus Maintainers
+| name              | Github    | Discord        |
+|-------------------|-----------|----------------|
 | Lucas Steuernagel | [@LucasSte](https://github.com/LucasSte)  | LucasSte#2331  |
 | Cyrill Leutwiler  | [@xermicus](https://github.com/xermicus)  | kägifret#8095  |
-| Salaheldin Soliman| [@salaheldinsoliman](https://github.com/salaheldinsoliman) | salaheldinsoliman  |