How to get rid of a nether tower in minecraft pe?

We'll, I made the nether port thinking I could use it again, but it turned out I can't. Now I have the nether tower right here! How do I get rid of it, please help!

I know how you feel… It took me forever to get all the material to build the Nether Tower. At first, I thought it would be reusable like the Nether Portal, but it's not. The bad news doesn't stop there: the Nether Tower ITSELF is unremovable. Now technically, if you have 50 diamond pickaxes, you can get rid of it, you just have to pick off every obsidian block one by one. And the BS part is that you have to get some more gold to make a new one… I had to start a new world because the breakdown took forever.

Sorry if I bummed you out.

I would suggest duplicating tnt and blowing it u if it bothers you.