[libcxx-commits] [libcxx] [libc++][ranges] implement `ranges::shift_left` (PR #83231)

[Louis Dionne via libcxx-commits]

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ldionne wrote:

We already have `libcxx/test/benchmarks/algorithms/modifying/shift_left.bench.cpp`. Also, we recently decided not to run both std and ranges benchmarks to reduce the time taken by the benchmark suite. So I think we're fine with removing this file.

https://github.com/llvm/llvm-project/pull/83231