You can absolutely do away with currency if the current mode of production got abolished. Currency itself is a necessity in a society that produces commodities for exchange, which creates rise for social constructs such as value, value forms like money, the possibility for an innate crisis and so on.
The first 2 chapters of Capital explains this, the commodity production system was a historical development rather than something coming out of nature (no chemist was able to find value through microscope), and we can certainly produce things to satisfy needs rather than exchange, with a much lower amount of work hours needed to do so.
You can absolutely do away with currency if the current mode of production got abolished. Currency itself is a necessity in a society that produces commodities for exchange, which creates rise for social constructs such as value, value forms like money, the possibility for an innate crisis and so on.
The first 2 chapters of Capital explains this, the commodity production system was a historical development rather than something coming out of nature (no chemist was able to find value through microscope), and we can certainly produce things to satisfy needs rather than exchange, with a much lower amount of work hours needed to do so.