Based on Le Chatelier's principle, when a component is removed from a system at equilibrium, the system will shift in a direction that opposes the change. In the given reaction:
2SO2(g) + O2(g) ⇌ 2SO3(g) ΔH = -310 kJ/mol
If you remove SO2 from the system, the reaction will try to compensate for the loss of SO2 by favoring the forward reaction to produce more SO2. Therefore, the system will shift to the right, in the forward direction, to replenish the concentration of SO2.
In summary, the direction of the change upon the removal of SO2 would be towards the right, favoring the formation of more SO3.