[Test] Reenabled xfail'd test.

nate-chandler · nate-chandler · commit 5db93cb3a0c4 · 2023-08-28T15:37:35.000-07:00
The test
`test/attr/attr_originally_definedin_backward_compatibility.swift` is
passing now.
diff --git a/test/attr/attr_originally_definedin_backward_compatibility.swift b/test/attr/attr_originally_definedin_backward_compatibility.swift
@@ -1,8 +1,6 @@
 // REQUIRES: executable_test
 // REQUIRES: OS=macosx || OS=ios
 // UNSUPPORTED: DARWIN_SIMULATOR=ios
-// rdar://problem/64298096
-// XFAIL: OS=ios && CPU=arm64
 // rdar://problem/65399527
 // XFAIL: OS=ios && CPU=armv7s
 //
