Merge pull request #64696 from bnbarham/revert-redeclare-weak

Revert "[Runtime] Redeclare _dyld_lookup_section_info as weak."

Author: shahmishal

stdlib/public/runtime/ImageInspectionMachO.cpp

@@ -33,16 +33,6 @@
 #if __has_include(<objc/objc-internal.h>) && __has_include(<mach-o/dyld_priv.h>)
 #include <mach-o/dyld_priv.h>
 #include <objc/objc-internal.h>
-
-// Redefine _dyld_lookup_section_info as weak so we can build against it but
-// still run when it's not present at runtime. Note that we don't have to check
-// for its presence at runtime, as it's guaranteed to be available if we get
-// the callbacks from objc_addLoadImageFunc2.
-LLVM_ATTRIBUTE_WEAK
-struct _dyld_section_info_result
-_dyld_lookup_section_info(const struct mach_header *mh,
-                          _dyld_section_location_info_t locationHandle,
-                          enum _dyld_section_location_kind kind);
 #else
 
 // Bring our own definition of enum _dyld_section_location_kind and some of its