fix(relayer): remove re-export of offchainLookupRequestMessageHash

The function is already exported from @hyperlane-xyz/sdk - consumers
should import directly from there instead of through the relayer package.

Author: paulbalaji

typescript/relayer/src/index.ts

@@ -24,7 +24,6 @@ export {
   NullMetadata,
   NullMetadataBuilder,
   OffchainLookupMetadataBuilder,
-  offchainLookupRequestMessageHash,
   RoutingMetadata,
 } from './metadata/index.js';
 export type {

typescript/relayer/src/metadata/index.ts

@@ -5,7 +5,6 @@ export {
 export { ArbL2ToL1Metadata, ArbL2ToL1MetadataBuilder } from './arbL2ToL1.js';
 export { BaseMetadataBuilder } from './builder.js';
 export { OffchainLookupMetadataBuilder } from './ccipread.js';
-export { offchainLookupRequestMessageHash } from '@hyperlane-xyz/sdk';
 export { decodeIsmMetadata } from './decode.js';
 export { MultisigMetadata, MultisigMetadataBuilder } from './multisig.js';
 export { NullMetadata, NullMetadataBuilder } from './null.js';