Remove excessive logging with SegRep using Remote store

[ankitkala]

For segment replication using remote store, with each refresh, we log the

1. segment files present on remote store
2. segment files present on local shard
3. segment fails downloaded/skipped

This create a lots of logs per shard per few seconds(with refresh). I think we should keep this enabled while the feature is behind experimental flag. This issue is to track the change to clean up these logs(or move to debug) before GA.

[dreamer-89]

PR #8767 refactors the RemoteStoreReplicationSource and does not call IndexShard.syncSegmentsFromRemoteSegmentStore anymore which contains the log statements. PR #8767 relies on replication source to perform this copy operation.