Make const, immutable, inout, and shared illegal as function attributes on the left-hand side of a function

[Joseph Rushton Wakeling via Digitalmars-d]

On Sunday, 12 October 2014 at 19:33:40 UTC, eles wrote:
> I beg forgiveness, but I think it was a timid suggestion to 
> clean up a bit Phobos...

No.

I actually think it's a very good thing that it's possible to 
preserve old, obsolete modules in Phobos.  As long as everything 
is covered in a strict deprecation warning to let everyone 
understand it is obsolete, it's better to keep the code there for 
backwards compatibility than gratuitously remove it, because of 
the risks of breakage to old codebases.

For the same reason, I'm happy to see LHS attributes be 
deprecated, but not for support for them to be removed.