Removed FNEW occurances in async.lua.
Removed FNEW occurances in async.lua.

mniestroj/turbo,luastoned/turbo,YuanPeir-Chen/turbo-support-mipsel,ddysher/turbo,luastoned/turbo,ddysher/turbo,zcsteele/turbo,kernelsauce/turbo,zcsteele/turbo,YuanPeir-Chen/turbo-support-mipsel