drop bip37 emulation.

lib/bcoin/pool.js

@@ -617,14 +617,6 @@ Pool.prototype._handleBlock = function _handleBlock(block, peer, callback) {
     // Fulfill our request.
     requested = self._response(block);
 
-    // Emulate BIP37: emit all the filtered transactions.
-    if (!self.options.spv && self.listeners('watched').length > 0) {
-      block.txs.forEach(function(tx) {
-        if (self.isWatched(tx))
-          self.emit('watched', tx, peer);
-      });
-    }
-
     // Ensure the block was not invalid last time.
     // Someone might be sending us bad blocks to DoS us.
     if (self.block.invalid[block.hash('hex')]) {