[compiler-rt] [sanitizer_common] Remove reference to obsolete termio ioctls (PR #138822)

[H. Peter Anvin via llvm-commits]

hpax wrote:

This certainly solves the immediate problem, but please see my note on #137321, which I still think is a better approach:

https://github.com/llvm/llvm-project/issues/137321#issuecomment-2836993353

https://github.com/llvm/llvm-project/pull/138822