Revert "Disable test/Interop/SwiftToCxx/class/swift-class-execution.cpp"

This reverts commit 5ce8b6c.

Author: hyp

test/Interop/SwiftToCxx/class/swift-class-execution.cpp

@@ -1,7 +1,5 @@
 // (1) Onone, no evolution
 
-// REQUIRES: rdar_109037144
-//
 // RUN: %empty-directory(%t-onone)
 
 // RUN: %target-swift-frontend %S/swift-class-in-cxx.swift -typecheck -module-name Class -clang-header-expose-decls=all-public -emit-clang-header-path %t-onone/class.h -Onone