Based on Kara's recommendation, I remove water dishes during breeding. They are only paired for 3 days and then they go back. Most of the leading reptile vets (Dr. Stahl, Dr. Jacobson) also recommend this to reduce the risk of RI's being spread from one animal to another. It's also why it's so important when you are changing water dishes during your normal cleaning not to "thumb" into one water dish and then "thumb" into the next.

I believe Dr. Scott Stahl also covered this on Reptile Radio as one means of RI transmission in snakes.

Others may find it silly, I prefer to think of it as prudent.