gas byte test

[Maciej W. Rozycki]

On Tue, 26 Jan 2021, Alan Modra via Binutils wrote:

> skip *-*-* is a little silly, delete the test.
> 
> 	* testsuite/gas/all/byte.d,
> 	* testsuite/gas/all/byte.l,
> 	* testsuite/gas/all/byte.s: Delete.
> 	* testsuite/gas/all/gas.exp: Don't run byte test.

 But do we have the handling of `.byte " "', etc. actually covered?  It 
does not appear to me that we do (except for `ppc' and `rx' possibly), so 
perhaps we should keep the test case actually, and instead examine output 
produced or at least verify that it assembles?

  Maciej