Is there anyway to bypass the "Choose Production" button. Basically in my cities there are no more buildings or wonders left to build and I don't want to keep building units as it eats at my money. The only solution I have is to build a unit then delete it on completion then repeat however this seems a rather round-about way of doing it. I would of thought choosing a production would be optional that or maybe I have missed something?
While you do have to produce something, there are a couple of techs that give you alternative options to using your production on units, wonders, or buildings:
The technology Currency unlocks "Wealth" which converts a percentage of your city's production directly to gold. Similarly, Education allows you to produce research. These two options are typically below the wonders group in your production menu.
You can also change the focus of your city away from production (to food, commerce, etc) which will slow down your production, while providing alternative benefits to your civilization. Changing the improvements on your tiles can also shift the focus of a city from production to some other use - for instance, chopping down forests or demolishing a mine will reduce the production in a tile.