I hate to say it, but getting rid of mosquitos would probably have bigger consequences than that. The females are the only ones sucking blood, the males on the other hand help pollinate plants, exterminating them could potentially affect our food production lines...
... But not gonna lie I'd still genocide the fuckers, ecological damage be damned.
You don't need to eliminate all mosquitos, just the ones that bite people.
There are dozens of different species of mosquitos, and not all of them bite people. If you get rid of the ones that bite people the others will likely still fill in as pollinators for those that are no longer competing with them.
Eh, kill off 3 or 4 billionaires per year and you'll counteract whatever additional environmental damage comes from millions of people not dying from malaria.