Disable a failing interop test

rdar://124466216

Author: meg-gupta

test/Interop/SwiftToCxx/enums/enum-associated-value-class-type-cxx.swift

@@ -5,7 +5,7 @@
 // RUN: %check-interop-cxx-header-in-clang(%t/enums.h -Wno-unused-private-field -Wno-unused-function)
 
 // rdar://124466216
-// UNSUPPORTED: CPU=armv7k
+// UNSUPPORTED: OS=watchos
 
 public class C {
     public var x: Int