faef6054

By: Tom Sydney Kerckhove <syd@cs-syd.eu>

centjes-stripe: delete a conversion that only its own test used

stripeCurrencyCurrencySymbol turned a Stripe currency code into a ledger symbol.
Nothing needs that direction: the importer goes the other way, from the ledger's
symbol to the code Stripe wants.
coverage-reporte2e-testexample-switzerland-taxesexample-switzerland-vatpackagepre-commitshellvim-pluginvim-syntaxweeder-checkconfiguredevShelldefaultmutation-centjesmutation-centjes-diffx86_64-linux