Revert "[builtins][arm64] Implement __init_cpu_features_resolver on Apple platforms (#75636)"

This reverts commit 17aa520.

Author: jroelofs

compiler-rt/lib/builtins/cpu_model/aarch64.c

@@ -123,9 +123,7 @@ struct {
 
 // The formatter wants to re-order these includes, but doing so is incorrect:
 // clang-format off
-#if defined(__APPLE__)
-#include "aarch64/fmv/apple.inc"
-#elif defined(__FreeBSD__)
+#if defined(__FreeBSD__)
 #include "aarch64/fmv/mrs.inc"
 #include "aarch64/fmv/freebsd.inc"
 #elif defined(__Fuchsia__)