* frv-tdep.c (frv_register_byte): Delete.

	* frv-tdep.c (frv_register_byte): Delete.
	(frv_extract_return_value, frv_store_return_value)
	(frv_extract_struct_value_address): Don't call frv_register_byte().
	Convert to non-deprecated form.
	(frv_gdbarch_init): Don't call set_gdbarch_deprecated_register_byte().
	Convert calls to set_gdbarch_deprecated_extract_return_value(),
	set_gdbarch_deprecated_store_return_value(), and
	set_gdbarch_deprecated_extract_struct_value_address() into
	non-deprecated forms.