That switching header is no longer necessary since everything outside of the ISA can use the BaseInterrupts class. Change-Id: Ie3ed45c38fec24234ff51fb05ba94f6f3cd02afd Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20832 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>