Disable cramfs CRC check #394
Description
Although it's a nice way to get rid of false positives, vendors (cough Cisco) don't care about CRCs and ship cramfs with broken checksums.
The signature check we do at https://github.com/onekey-sec/unblob/blob/main/unblob/handlers/filesystem/cramfs.py#L46 should be sufficient for false positive reduction.