Validate regexp rules, and remove the rules which used for non-domain blocking.

Sample rules (with protocol prefix)
```
/(https?:\/\/)51\.195\.31\..{100,}/
/(https?:\/\/)217\.182\.11\..{100,}/
/(https?:\/\/)213\.32\.115\..{100,}/
```

Original issue: https://github.com/AdguardTeam/AdGuardSDNSFilter/issues/1224