Its too many simulators in Xcode 6.4

Question

i have too many in my xCode application
i try to delete but just a moment its back to device list
how to remove it.

xcode Version 6.4 (6E35b)

Answer 1

It may happen because of multiple Xcode installed or during Xcode upgrades. The only thing that need to be done is to open Xcode -> Window -> Devices select duplicated device and delete it.

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