chore: deprecate rome testnets (#984)

### Description

chore: deprecate rome testnets

follows up from
#984, as the
network no longer exists

### Backward compatibility

<!--
Are these changes backward compatible? Note that additions are backwards
compatible.

Yes/No
-->

### Testing

<!--
Have any new metadata configs and deployment addresses been used with
any Hyperlane tooling, such as the CLI?
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Author: paulbalaji

.changeset/clean-numbers-know.md

@@ -0,0 +1,5 @@
+---
+'@hyperlane-xyz/registry': minor
+---
+
+Deprecate rometestnet1, rometestnet2.

chains/rometestnet/logo.svg renamed to chains/deprecatedrometestnet/logo.svg

@@ -12,7 +12,7 @@ chainId: 200018
 displayName: Rome Testnet
 domainId: 200018
 isTestnet: true
-name: rometestnet
+name: deprecatedrometestnet
 nativeToken:
   decimals: 18
   name: ROME

chains/rometestnet/metadata.yaml renamed to chains/deprecatedrometestnet/metadata.yaml

@@ -9,13 +9,10 @@ blocks:
   estimateBlockTime: 4
   reorgPeriod: 0
 chainId: 3001
-deployer:
-  name: Abacus Works
-  url: https://www.hyperlane.xyz
 displayName: Rome Testnet
 domainId: 3001
 isTestnet: true
-name: rometestnet2
+name: deprecatedrometestnet2
 nativeToken:
   decimals: 18
   name: rSOL