Default to building wxOSX, not wxiOS, under Apple ARM platforms

Now that desktop Macs using ARM exist, we should default to building the
normal, macOS-targeting, port on them and not wxiOS any more.

This is a backwards incompatible change, but it shouldn't affect many
people, so should hopefully be fine.

configure

@@ -4015,18 +4015,8 @@ case "${host}" in
     DEFAULT_DEFAULT_wxUSE_MSW=1
   ;;
 
-  arm-apple-darwin*)
-        USE_BSD=1
-    USE_DARWIN=1
-    $as_echo "#define __BSD__ 1" >>confdefs.h
-
-    $as_echo "#define __DARWIN__ 1" >>confdefs.h
-
-    DEFAULT_DEFAULT_wxUSE_OSX_IPHONE=1
-  ;;
-
   *-*-darwin* )
-        USE_BSD=1
+            USE_BSD=1
     USE_DARWIN=1
     $as_echo "#define __BSD__ 1" >>confdefs.h