How do I remove Button Groups from a gui (gui builder)

:working:

When I first started building my gui, I played around a bit and I didn't
understand how the Button Group-component worked. This resulted in some
trash generated code that I now have in my code.

Now I don't know how to delete these ButtonGroups. I can't make safe delete
for some reason, although I'm not using them at all.

I'm also wondering if there's a possibility to give the components in the
code better names than jLabel1 etc.. In the generated code you're not able
to go into the code blocks and put normal //-comments so I'd like to have
something more explaining.

I'm just learning how the gui builder works and I think it's fantastic. It's
only these code-issues that I have all the time.
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