Merge commit '8d194770880a' from swift/release/6.2 into stable/20240723

Author: git apple-llvm automerger

clang/lib/Headers/float.h

@@ -17,18 +17,10 @@
 /* On various platforms, fall back to the system's float.h, which might have
  * additional definitions and/or implementation-defined values.
  */
-#if (defined(__APPLE__) || defined(__MINGW32__) || defined(_MSC_VER) ||        \
-     defined(_AIX) || defined(__musl__)) &&                                    \
+#if (defined(__MINGW32__) || defined(_MSC_VER) || defined(_AIX) ||             \
+     defined(__musl__)) &&                                                     \
     __STDC_HOSTED__ && __has_include_next(<float.h>)
 
-/* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level
- * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this
- * extra indirection.
- */
-#ifdef __APPLE__
-#define _FLOAT_H_
-#endif
-
 #  include_next <float.h>
 
 /* Undefine anything that we'll be redefining below. */