[nfc] [cxx-interop] Disable `ReadAccessor` benchmark.
[nfc] [cxx-interop] Disable `ReadAccessor` benchmark.

benlangmuir/swift,benlangmuir/swift,ahoppen/swift,JGiola/swift,glessard/swift,atrick/swift,apple/swift,glessard/swift,ahoppen/swift,apple/swift,benlangmuir/swift,glessard/swift,benlangmuir/swift,JGiola/swift,atrick/swift,apple/swift,benlangmuir/swift,apple/swift,apple/swift,atrick/swift,JGiola/swift,glessard/swift,ahoppen/swift,roambotics/swift,JGiola/swift,ahoppen/swift,JGiola/swift,ahoppen/swift,atrick/swift,roambotics/swift,roambotics/swift,apple/swift,ahoppen/swift,atrick/swift,benlangmuir/swift,roambotics/swift,glessard/swift,JGiola/swift,glessard/swift,roambotics/swift,roambotics/swift,atrick/swift