mempool: drop old getCoinView.

lib/mempool/mempool.js

@@ -1618,35 +1618,6 @@ Mempool.prototype.getSpentView = co(function* getSpentView(tx) {
   }
 });
 
-/**
- * Get coin viewpoint (no lock).
- * @method
- * @param {TX} tx
- * @returns {Promise} - Returns {@link CoinView}.
- */
-
-Mempool.prototype.getCoinView = co(function* getCoinView(tx) {
-  var view = yield this.chain.db.getCoinView(tx);
-  var items = view.toArray();
-  var i, coins, entry;
-
-  for (i = 0; i < items.length; i++) {
-    coins = items[i];
-
-    if (!coins.isEmpty())
-      continue;
-
-    entry = this.getEntry(coins.hash);
-
-    if (!entry)
-      continue;
-
-    view.addTX(entry.tx, -1);
-  }
-
-  return view;
-});
-
 /**
  * Get coin viewpoint (no lock).
  * @method