[libc++] Remove _LIBCPP_C_HAS_NO_GETS (#77346)
Since we use _LIBCPP_USING_IF_EXISTS to handle missing C library functions
now, _LIBCPP_C_HAS_NO_GETS shouldn't be necessary anymore.
See the discussion thread in #77242 for more details.
GitOrigin-RevId: 761b9d9e4631aa85f932e5ee33aae1f7b8a0538e
diff --git a/include/__config b/include/__config
index 082c73e..1958d5c 100644
--- a/include/__config
+++ b/include/__config
@@ -1133,11 +1133,6 @@
# define _LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION
# endif
-// Some systems do not provide gets() in their C library, for security reasons.
-# if defined(_LIBCPP_MSVCRT) || (defined(__FreeBSD_version) && __FreeBSD_version >= 1300043) || defined(__OpenBSD__)
-# define _LIBCPP_C_HAS_NO_GETS
-# endif
-
# if defined(__BIONIC__) || defined(__NuttX__) || defined(__Fuchsia__) || defined(__wasi__) || \
defined(_LIBCPP_HAS_MUSL_LIBC) || defined(__OpenBSD__)
# define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
diff --git a/include/cstdio b/include/cstdio
index b1b0ff8..0a867ce 100644
--- a/include/cstdio
+++ b/include/cstdio
@@ -159,7 +159,7 @@
using ::tmpnam _LIBCPP_USING_IF_EXISTS;
using ::getchar _LIBCPP_USING_IF_EXISTS;
-#if _LIBCPP_STD_VER <= 11 && !defined(_LIBCPP_C_HAS_NO_GETS)
+#if _LIBCPP_STD_VER <= 11
using ::gets _LIBCPP_USING_IF_EXISTS;
#endif
using ::scanf _LIBCPP_USING_IF_EXISTS;
