qemu: Remove need for virConnectPtr in hotunplug detach host, net

Prior patch removed the need for the virConnectPtr in the unplug
detach host path which caused ripple effect to remove in multiple
callers.  The previous patch just left things as ATTRIBUTE_UNUSED -
this patch will remove the variable.

src/qemu/qemu_driver.c

@@ -6803,10 +6803,10 @@ qemuDomainDetachDeviceLive(virDomainObjPtr vm,
         ret = qemuDomainDetachLease(driver, vm, dev->data.lease);
         break;
     case VIR_DOMAIN_DEVICE_NET:
-        ret = qemuDomainDetachNetDevice(dom->conn, driver, vm, dev);
+        ret = qemuDomainDetachNetDevice(driver, vm, dev);
         break;
     case VIR_DOMAIN_DEVICE_HOSTDEV:
-        ret = qemuDomainDetachHostDevice(dom->conn, driver, vm, dev);
+        ret = qemuDomainDetachHostDevice(driver, vm, dev);
         break;
     case VIR_DOMAIN_DEVICE_CHR:
         ret = qemuDomainDetachChrDevice(driver, vm, dev->data.chr);

src/qemu/qemu_hotplug.c

@@ -3326,8 +3326,7 @@ qemuDomainDetachHostUSBDevice(virQEMUDriverPtr driver,
 }
 
 static int
-qemuDomainDetachHostSCSIDevice(virConnectPtr conn ATTRIBUTE_UNUSED,
-                               virQEMUDriverPtr driver,
+qemuDomainDetachHostSCSIDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainHostdevDefPtr detach)
 {
@@ -3361,8 +3360,7 @@ qemuDomainDetachHostSCSIDevice(virConnectPtr conn ATTRIBUTE_UNUSED,
 }
 
 static int
-qemuDomainDetachThisHostDevice(virConnectPtr conn,
-                               virQEMUDriverPtr driver,
+qemuDomainDetachThisHostDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainHostdevDefPtr detach)
 {
@@ -3376,7 +3374,7 @@ qemuDomainDetachThisHostDevice(virConnectPtr conn,
         ret = qemuDomainDetachHostUSBDevice(driver, vm, detach);
         break;
     case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI:
-        ret = qemuDomainDetachHostSCSIDevice(conn, driver, vm, detach);
+        ret = qemuDomainDetachHostSCSIDevice(driver, vm, detach);
         break;
     default:
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
@@ -3399,8 +3397,7 @@ qemuDomainDetachThisHostDevice(virConnectPtr conn,
 }
 
 /* search for a hostdev matching dev and detach it */
-int qemuDomainDetachHostDevice(virConnectPtr conn,
-                               virQEMUDriverPtr driver,
+int qemuDomainDetachHostDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainDeviceDefPtr dev)
 {
@@ -3469,14 +3466,13 @@ int qemuDomainDetachHostDevice(virConnectPtr conn,
      * function so that mac address / virtualport are reset
      */
     if (detach->parent.type == VIR_DOMAIN_DEVICE_NET)
-        return qemuDomainDetachNetDevice(conn, driver, vm, &detach->parent);
+        return qemuDomainDetachNetDevice(driver, vm, &detach->parent);
     else
-        return qemuDomainDetachThisHostDevice(conn, driver, vm, detach);
+        return qemuDomainDetachThisHostDevice(driver, vm, detach);
 }
 
 int
-qemuDomainDetachNetDevice(virConnectPtr conn,
-                          virQEMUDriverPtr driver,
+qemuDomainDetachNetDevice(virQEMUDriverPtr driver,
                           virDomainObjPtr vm,
                           virDomainDeviceDefPtr dev)
 {
@@ -3492,7 +3488,7 @@ qemuDomainDetachNetDevice(virConnectPtr conn,
 
     if (virDomainNetGetActualType(detach) == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
         /* coverity[negative_returns] */
-        ret = qemuDomainDetachThisHostDevice(conn, driver, vm,
+        ret = qemuDomainDetachThisHostDevice(driver, vm,
                                              virDomainNetGetActualHostdev(detach));
         goto cleanup;
     }

src/qemu/qemu_hotplug.h

@@ -78,12 +78,10 @@ int qemuDomainDetachDeviceDiskLive(virQEMUDriverPtr driver,
 int qemuDomainDetachControllerDevice(virQEMUDriverPtr driver,
                                      virDomainObjPtr vm,
                                      virDomainDeviceDefPtr dev);
-int qemuDomainDetachNetDevice(virConnectPtr conn,
-                              virQEMUDriverPtr driver,
+int qemuDomainDetachNetDevice(virQEMUDriverPtr driver,
                               virDomainObjPtr vm,
                               virDomainDeviceDefPtr dev);
-int qemuDomainDetachHostDevice(virConnectPtr conn,
-                               virQEMUDriverPtr driver,
+int qemuDomainDetachHostDevice(virQEMUDriverPtr driver,
                                virDomainObjPtr vm,
                                virDomainDeviceDefPtr dev);
 int qemuDomainAttachLease(virQEMUDriverPtr driver,