//go:generate moved out of OS specific go file

To avoid cross platform go generate issue
Look at https://github.com/golang/go/issues/16368

serial_windows.go

@@ -23,8 +23,6 @@ type windowsPort struct {
 	handle syscall.Handle
 }
 
-//go:generate go run extras/mksyscall_windows.go -output syscall_windows.go serial_windows.go
-
 //sys regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, value *uint16, valueLen *uint32) (regerrno error) = advapi32.RegEnumValueW
 
 func nativeGetPortsList() ([]string, error) {