[lld-macho,test] Fix REQUIRES after #97639

Author: MaskRay

lld/test/MachO/implicit-and-allowable-clients.test

@@ -1,4 +1,4 @@
-# REQUIRES: arm
+# REQUIRES: aarch64
 # RUN: rm -rf %t; split-file %s %t
 # RUN: ln -s Versions/A/FrameworkPublic.tbd %t/System/Library/Frameworks/FrameworkPublic.framework/
 # RUN: ln -s Versions/A/FrameworkPrivate.tbd %t/System/Library/Frameworks/FrameworkPrivate.framework/
@@ -46,4 +46,3 @@ _main:
 .data
   .quad _funcPublic
   .quad _funcPrivate
-