Revert "Reduce duplicate peer traffic for ledger data (#5126)" (#5300)

This reverts commit dd5e6559dd. It has
introduced a regression causing slow close times and syncing issues.
A fix will be attempted later.

src/xrpld/app/misc/HashRouter.cpp

@@ -90,20 +90,6 @@ HashRouter::shouldProcess(
     return s.shouldProcess(suppressionMap_.clock().now(), tx_interval);
 }
 
-bool
-HashRouter::shouldProcessForPeer(
-    uint256 const& key,
-    PeerShortID peer,
-    std::chrono::seconds interval)
-{
-    std::lock_guard lock(mutex_);
-
-    auto& entry = emplace(key).first;
-
-    return entry.shouldProcessForPeer(
-        peer, suppressionMap_.clock().now(), interval);
-}
-
 int
 HashRouter::getFlags(uint256 const& key)
 {
@@ -142,13 +128,4 @@ HashRouter::shouldRelay(uint256 const& key)
     return s.releasePeerSet();
 }
 
-auto
-HashRouter::getPeers(uint256 const& key) -> std::set<PeerShortID>
-{
-    std::lock_guard lock(mutex_);
-
-    auto& s = emplace(key).first;
-    return s.peekPeerSet();
-}
-
 }  // namespace ripple