Remove needless #include<unistd.h>

Author: slipher

src/shared/VMMain.cpp

@@ -31,9 +31,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "VMMain.h"
 #include "CommonProxies.h"
 #include "common/IPC/CommonSyscalls.h"
-#ifndef _WIN32
-#include <unistd.h>
-#endif
 
 IPC::Channel VM::rootChannel;