Avoid using String.replace(String, String) in codegen

Two classes in codegen currently use String.replace("_STRICT", "") to cut the "_STRICT" postfix from internal callsite names. This is a bit wasteful because the search term is compiled to a regexp and we know it only ever occurs at the end of the String. So something like the following seems more efficient:

   name.endsWith("_STRICT") ? name.substring(0, name.length() - 7) : name