I wouldn't tap it on the bench to get rid of solder. That solder doesn't always end up where you expect and turns up between the pins on a TSSOP package for example. This, when it is a switching converter, is followed by a miniature firework display. I speak from experience
If that is being done on assembly lines, they should be shot. Glue, then drag solder, then use wick to get rid of the excess, then clean, then inspect.