Delete out non-needed functions from SysInfo

Delete LaunchContext

Signed-off-by: timoreo <contact@timoreo.fr>

launcher/SysInfo.h

@@ -1,12 +1,6 @@
 #include <QString>
-#include "minecraft/LaunchContext.h"
-#ifdef Q_OS_MACOS
-#include <sys/sysctl.h>
-#endif
 
 namespace SysInfo {
 QString currentSystem();
-QString currentArch(LaunchContext launchContext);
-QString runCheckerForArch(LaunchContext launchContext);
 QString useQTForArch();
 }