remove logging

lib/services/block.js

@@ -210,14 +210,13 @@ BlockService.prototype.listBlocks = function(from, to, offset, limit) {
     if (height > end) {
       return;
     }
-    console.log('fetching block', height);
     return self.getBlockByHeight(height)
       .then(function(block) {
         blocks.push(block.toObject());
         return fetchBlock(height + 1);
       })
       .catch(function(err) {
-        console.log(err);
+        // block not found, ignore
       });
   };
   return fetchBlock(start)