i965/formatquery: remove INTERNALFORMAT_PREFERRED implementation
Right now the implementation only checks if the internalformat is
supported or not. But that implementation is wrong, returning
unsupported for some internalformats. Additionally, checking if
the internalformat is supported or not is already done at mesa/main
before calling the driver hook, so this new check is not needed.
Acked-by: Eduardo Lima <elima@igalia.com>
Acked-by: Antia Puentes <apuentes@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>