Remove Currency Stamp

NopSolutions.NopCommerce.BusinessLogic.Products.PriceHelper

public static string FormatPrice(decimal price)
{
bool ShowCurrency = true;
var TargetCurrency = NopContext.Current.WorkingCurrency;
return FormatPrice(price, ShowCurrency, TargetCurrency);
}

Change the ShowCurrency variable to false.

This information is written specifically to nopCommerce build 1.70.