[compiler-rt] [sanitizer_common] Remove interceptors for deprecated struct termio (PR #137403)

[via llvm-commits]

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@@ -494,9 +494,6 @@ unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
   unsigned struct_input_id_sz = sizeof(struct input_id);
   unsigned struct_mtpos_sz = sizeof(struct mtpos);
   unsigned struct_rtentry_sz = sizeof(struct rtentry);
-#if SANITIZER_GLIBC || SANITIZER_ANDROID
-  unsigned struct_termio_sz = sizeof(struct termio);
-#endif
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enh-google wrote:

(on Android, <termio.h> is just `#include <termios.h>` anyway)

https://github.com/llvm/llvm-project/pull/137403