Function xsltUnregisterExtModuleFunction 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xsltUnregisterExtModuleFunction(
    name: *const xmlChar,
    URI: *const xmlChar,
) -> c_int

xsltUnregisterExtModuleFunction (extensions.c).

UPSTREAM-PARITY

int xsltUnregisterExtModuleFunction(const xmlChar *name, const xmlChar *URI);