It never existed in the first place. Essentially, the miner had the right to mint 2.5 ZEC for itself but only chose to mint 2.0 ZEC (whether by accident, or for some reason). So long as they don’t shortchange the ECC, ZF, and ZOMG portions, the block will be accepted per the consensus rules.
According to ancient Ycash mythology, the Ycash gods require a tribute of one full block reward before each halving. Most people don’t believe in such silly superstitions, but some do, like this miner: