[libcxx-commits] [libcxx] [libc++][NFC] Remove unnecessary unsigned comparison with 0 (PR #108391)

[Mital Ashok via libcxx-commits]

MitalAshok wrote:

Split off from #107713  
Note that this is an existing issue even without trying to change `_LIBCPP_ASSUME`: https://godbolt.org/z/65Gnn639e  
No test runner seems to run a combination of gcc-14 + assertions that compiles with this file that would have caught this

https://github.com/llvm/llvm-project/pull/108391