Revert "Filter out peers of divergent or significantly inferior chains when syncing."

This reverts commit 1dc7f056f9. To be un-reverted in future when there is more time available for testing.

src/main/java/org/qortal/controller/Controller.java

@@ -752,19 +752,6 @@ public class Controller extends Thread {
 		return peerChainTipData == null || peerChainTipData.getSignature() == null || inferiorChainTips.contains(ByteArray.wrap(peerChainTipData.getSignature()));
 	};
 
-	/**
-	 * If a peer has a recent block timestamp, but its height is more than 25 blocks behind ours,
-	 * we can assume it has a significantly inferior chain, and is most likely too divergent.
-	 * Early filtering of these peers prevents a lot of very expensive chain weight comparisons.
-	 */
-	public static final Predicate<Peer> hasInferiorChain = peer -> {
-		final Long minLatestBlockTimestamp = getMinimumLatestBlockTimestamp();
-		final int ourHeight = Controller.getInstance().getChainHeight();
-		final BlockSummaryData peerChainTipData = peer.getChainTipData();
-		boolean peerUpToDate = peerChainTipData != null && peerChainTipData.getTimestamp() != null && peerChainTipData.getTimestamp() >= minLatestBlockTimestamp;
-		return peerUpToDate && ourHeight - peerChainTipData.getHeight() > 25;
-	};
-
 	public static final Predicate<Peer> hasOldVersion = peer -> {
 		final String minPeerVersion = Settings.getInstance().getMinPeerVersion();
 		return peer.isAtLeastVersion(minPeerVersion) == false;

src/main/java/org/qortal/controller/Synchronizer.java

@@ -247,9 +247,6 @@ public class Synchronizer extends Thread {
 		// Disregard peers that are on the same block as last sync attempt and we didn't like their chain
 		peers.removeIf(Controller.hasInferiorChainTip);
 
-		// Disregard peers that are on a very inferior chain, based on their heights and timestamps
-		peers.removeIf(Controller.hasInferiorChain);
-
 		// Disregard peers that have a block with an invalid signer
 		peers.removeIf(Controller.hasInvalidSigner);