No, it is redundant, but ..... as a general rule of thumb it is better to:
use a DNS service for blocking malware/phishing domains, don't use it for blocking advertising and tracking networks, because . . .
a DNS does not differentiate between first and third-party
a DNS can only apply simple block rules (no advanced rules and no cosmetic rules)
it is much more hassle to correct website breakage at the DNS than with an adblocker in your browser
use an adblocker for blocking advertising/tracking networks, don't use it for malware/phishing domains, because . . .
the update frequency of adblock filters is to low to be effective
the adblock malware/phishing filterlists are tiny compared to huge bad-URL blocklists at the DNS
malware blocking causes more delay (CPU cycles) on your PC than malware blocking at the DNS (has many servers which do the hard work for you)
The only exception on above rules of thumb are third-party trackers which mask themselves as first-party (CNAME cloacking). These trackers can be best blocked at DNS-level. Additionally most DNS services use Artificial Intelligence and Machine Learning to find new malware URL's based on traffic pattern/anomaly recognition and real time interpretation of big data.