storageVolLookupData: Drop conn struct member

Since its introduction in 5d5c732d it has been never used.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/storage/storage_driver.c

@@ -1520,7 +1520,6 @@ storageVolLookupByName(virStoragePoolPtr pool,
 
 
 struct storageVolLookupData {
-    virConnectPtr conn;
     const char *key;
     char *cleanpath;
     const char *path;
@@ -1547,7 +1546,7 @@ storageVolLookupByKey(virConnectPtr conn,
     virStoragePoolObjPtr obj;
     virStoragePoolDefPtr def;
     struct storageVolLookupData data = {
-        .conn = conn, .key = key, .voldef = NULL };
+        .key = key, .voldef = NULL };
     virStorageVolPtr vol = NULL;
 
     if ((obj = virStoragePoolObjListSearch(driver->pools,
@@ -1627,7 +1626,7 @@ storageVolLookupByPath(virConnectPtr conn,
     virStoragePoolObjPtr obj;
     virStoragePoolDefPtr def;
     struct storageVolLookupData data = {
-        .conn = conn, .path = path, .voldef = NULL };
+        .path = path, .voldef = NULL };
     virStorageVolPtr vol = NULL;
 
     if (!(data.cleanpath = virFileSanitizePath(path)))

src/test/test_driver.c

@@ -5026,7 +5026,6 @@ testStorageVolLookupByName(virStoragePoolPtr pool,
 
 
 struct storageVolLookupData {
-    virConnectPtr conn;
     const char *key;
     const char *path;
     virStorageVolDefPtr voldef;
@@ -5053,7 +5052,7 @@ testStorageVolLookupByKey(virConnectPtr conn,
     virStoragePoolObjPtr obj;
     virStoragePoolDefPtr def;
     struct storageVolLookupData data = {
-        .conn = conn, .key = key, .voldef = NULL };
+        .key = key, .voldef = NULL };
     virStorageVolPtr vol = NULL;
 
     testDriverLock(privconn);
@@ -5097,7 +5096,7 @@ testStorageVolLookupByPath(virConnectPtr conn,
     virStoragePoolObjPtr obj;
     virStoragePoolDefPtr def;
     struct storageVolLookupData data = {
-        .conn = conn, .path = path, .voldef = NULL };
+        .path = path, .voldef = NULL };
     virStorageVolPtr vol = NULL;
 
     testDriverLock(privconn);