libxl: remove obsolete check for xend during driver startup

No supported build targets for libvirt still ship xend, so there is no
need for the libxl driver to check for it anymore.
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/libxl/libxl_driver.c

@@ -525,12 +525,10 @@ libxlStateCleanup(void)
 static bool
 libxlDriverShouldLoad(bool privileged)
 {
-    bool ret = false;
-
     /* Don't load if non-root */
     if (!privileged) {
         VIR_INFO("Not running privileged, disabling libxenlight driver");
-        return ret;
+        return false;
     }
 
     if (virFileExists(HYPERVISOR_CAPABILITIES)) {
@@ -549,31 +547,15 @@ libxlDriverShouldLoad(bool privileged)
             VIR_INFO("No Xen capabilities detected, probably not running "
                      "in a Xen Dom0.  Disabling libxenlight driver");
 
-            return ret;
+            return false;
         }
     } else if (!virFileExists(HYPERVISOR_XENSTORED)) {
         VIR_INFO("Disabling driver as neither " HYPERVISOR_CAPABILITIES
                  " nor " HYPERVISOR_XENSTORED " exist");
-        return ret;
-    }
-
-    /* Don't load if legacy xen toolstack (xend) is in use */
-    if (virFileExists("/usr/sbin/xend")) {
-        virCommandPtr cmd;
-
-        cmd = virCommandNewArgList("/usr/sbin/xend", "status", NULL);
-        if (virCommandRun(cmd, NULL) == 0) {
-            VIR_INFO("Legacy xen tool stack seems to be in use, disabling "
-                     "libxenlight driver.");
-        } else {
-            ret = true;
-        }
-        virCommandFree(cmd);
-    } else {
-        ret = true;
+        return false;
     }
 
-    return ret;
+    return true;
 }
 
 /* Callbacks wrapping libvirt's event loop interface */