I hate this, I really do. I can't fish through 20 different threads to try and look for an answer. I've had this bike for 5 years and have never seen this question answered.
Can I just put a standard valve stem in my Connie wheels and do away with all the dash clutter?

Yes.

I, personally, would never disable anything that could be considered a safety item for someone else. In today's litigious society, in the event of an accident, the opportunity for a law suit to arise is all but guaranteed.

It's a factory farkle.

It's only a factory farkle until the Widow Jones hires Dewey, Screwem, and Howe to represent her her in her suit against the Big, Bad Kawasaki dealer that "altered" her dearly departed husband's motorcycle.

 What an individual chooses to do to his or her own motorcycle is one thing, what a dealer does is entirely different

That's exactly right..

I hate this, I really do. I can't fish through 20 different threads to try and look for an answer. I've had this bike for 5 years and have never seen this question answered.
Can I just put a standard valve stem in my Connie wheels and do away with all the dash clutter?

I don't see why not.  The hole is approximately 8mm.  Anything larger won't fit.  Course you could just let the batteries die and continue on.

Can you get rid of the tire pressure error with a reflash of the ecu. Gonna get the sensors replaced under warranty as soon as the tires are worn out. Bought my new 2013 just in October and the rear has never worked and the front gives a low battery ever time I restart. Thinking about a reflash anyway.

Not necessary. Once the batteries are dead the display disappears completely from the dash.

update to add B.D.F.'s 'no tire removal necessary' method for TPMS removal, for battery replacement, if your tires are brand new....

http://www.zggtr.org/index.php?topic=16850.msg206925#msg206925

And in case anyone is wondering, yes, you can replace the sensors with plain ol' rubber valve stems. The dash never gives me crap anymore.

Not necessary. Once the batteries are dead the display disappears completely from the dash.

I think this is not quite correct. When the batterry is completely dead I think you get --- but no low battery warning.

When the battery is completely dead I think you get --- but no low battery warning.

As one that has actually run the TPS battery all the way down before finally replacing it, that is correct you get 3 dashes, and no low TPS battery warning.

    In the interests of accuracy and precision, you get F -- -- or R -- -- as the case may be.