[flang-commits] [flang] [flang] Remove `do concurrent` mapping experimental warning (PR #195009)

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dpalermo wrote:

> On the flang call today, @kiranktp pointed out that CPU support has been working well for some time. However, @rouson reported failures when lowering `DO CONCURRENT` to the GPU. Rather than remove the warning altogether, could we issue it only when lowering to GPU is attempted?

@ergawy completely removed the warning as the do concurrent mapping to both host and GPU is no longer an experimental feature, but is now usable.  Just because there are some bugs/issued still to be resolved doesn't make it experimental....otherwise all compilers would always be consider experimental ;-).

I recommend just removing the warning completely.  We will continue to work on bugs/issues as they are reported.

https://github.com/llvm/llvm-project/pull/195009