I'd be very cautious about deleting anything from the Misc folder. Just because it's "miscellaneous" doesn't mean it's expendable.
Your phone only has 8 GB of total internal storage, of which probably 4-5 GB are taken up by the operating system and any preinstalled apps (that you can't remove). 8 GB is barely enough to do much of anything these days besides very basic functions. Here are some ideas to maximize what little storage you have:
[GUIDE] Android Storage Memory and How to Deal with Insufficient Storage Warnings - Android Forums at AndroidCentral.com. Unfortunately, if you want or need to have a lot of apps installed, you'll just have to consider upgrading to a phone with much more internal storage.