[PATCH] DebugIR: Delete -debug-ir

[Duncan P. N. Exon Smith]

Committed in r222945 and r222946.

> On 2014 Nov 28, at 19:10, Eric Christopher <echristo at gmail.com> wrote:
> 
> Ok. Thanks. 
> 
> -eric
> 
> On Fri, Nov 28, 2014, 6:39 PM Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote:
> Based on feedback on removing a metadata RAUW from -debug-ir [1], this
> patch deletes the -debug-ir pass entirely.
> 
> [1]: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141124/245981.html
>