Midi problem

[Fuutari Makku]

I found a midi where every blank note is named blank. There are also many "blank" notes between two notes. I want to delete every blank note , but I don't wanna lose too much time (cause they're lots of blank). I tried select by name , but nothing happens , only a strange message that I don't understand cause it's in japanese.
Help

 

[warm rootbeer]

I'm not sure if this will help but, I had a similar question a while ago:
http://utaforum.net/thread-easier-way-to-input-lyrics