swift

a1cb9bbc - [AutoDiff] Move differentiable curry thunk bug reproducer to an XFAIL test.

[AutoDiff] Move differentiable curry thunk bug reproducer to an XFAIL test. Due to rdar://87429620, test/AutoDiff/SILOptimizer/differentiation_diagnostics.swift is still using `-requirement-machine=off`. This patch moves the reproducer to a standalone XFAIL test, and removes `-requirement-machine=off` from differentiation_diagnostics.swift.