Thanks for getting in touch via the forum, we always appreciate feedback.
The Crumble software was originally designed to be very similar to scratch, and at the time, there wasn’t the option to delete from within a block of code.
However it has been added into newer versions, and it is something that we have been considering for a while. It would definitely make programming easier with longer code. It is likely that this feature will be added in the not too distant future.
For the meantime, if you drag the code from beneath the block/section you want to remove, and insert it straight above the bit to remove, the bit you want rid of will go to the end of the bit you just moved around, making it easier to remove.
I hope that this helps, but if you have any more questions, feel free to ask away!