The zero Ohm resistor can be eliminated and a simple trace be used in the final application.
Zero Ohm resistors may be used for a number of reasons. In the case of evaluation boards, they are often used when it is not readily apparent whether a power supply needs resistive decoupling in addition to one or more capacitors. Zero Ohms may be used first and, if there are noise problems, the zero Ohm resistor may be replaced with a resistance of 10 or 20 Ohms (perhaps more, in some cases). Also, users of the eval board may connect that board to other circuitry that may cause noise on the supply line. In this case, having a zero Ohm resistor is nice because the user can simply remove it and put in a higher value resistor to reduce the noise on the supply line to a sensitive circuit.
Other uses for zero Ohm resistors include allowing the removal of a supply voltage somewhere or to allow inserting a current meter when the resistor is removed. Of course, this can also be done with a jumper, which would be easier for the user, but it is more costly and sometimes board cost is more important than being easier. For example, some companies allow buying things for up to $100 from petty cash where it is not necessary to go to the trouble of generating a purchase requisition. Removing a few jumpers and using fewer board layers (where practical) can be the difference between a board being $99 or over that critical $100.