To answer the OP the only way you can see that presently is to look on the player's card under batting> batting vs pitchers and then having to scroll to find it. A "vs current P" split on the lineup screen would be nice.
Well if one doesn't like the stat the easy option is to not look at it
Why take out a stat that others want? One could argue to take out pitcher wins and rbi too,no?
Actually I believe the game is coded where some players do have a tendency to "own" certain Ps and vice versa. One can certainly argue it shouldn't be in the game and provide evidence and maybe it gets removed. Markus has always been good about looking at evidence and making changes to the game but, even if one was successful and got this "feature" removed there would be no reason to remove the stat. It adds some flavor that some like to see in their game even though, like many other stats in the game, may be useless in the context of future performance.