Remove unused 'enable_gbac' from vboxjob.cpp

samples/vboxwrapper/vboxjob.cpp

@@ -123,7 +123,6 @@ void VBOX_JOB::clear() {
     network_bridged_mode = false;
     enable_nat_dns_host_resolver = false;
     enable_remotedesktop = false;
-    enable_gbac = false;
     enable_screenshots_on_error = false;
     enable_graphics_support = false;
     enable_vm_savestate_usage = false;
@@ -201,7 +200,6 @@ int VBOX_JOB::parse() {
         else if (xp.parse_bool("enable_cache_disk", enable_cache_disk)) continue;
         else if (xp.parse_bool("enable_isocontextualization", enable_isocontextualization)) continue;
         else if (xp.parse_bool("enable_remotedesktop", enable_remotedesktop)) continue;
-        else if (xp.parse_bool("enable_gbac", enable_gbac)) continue;
         else if (xp.parse_bool("enable_screenshots_on_error", enable_screenshots_on_error)) continue;
         else if (xp.parse_bool("enable_graphics_support", enable_graphics_support)) continue;
         else if (xp.parse_bool("enable_vm_savestate_usage", enable_vm_savestate_usage)) continue;