Move size to types

Signed-off-by: Katarzyna Treder <katarzyna.treder@h-partners.com>

test_tools/blktrace.py

@@ -15,7 +15,7 @@ from core.test_run import TestRun
 from storage_devices.device import Device
 from test_utils.filesystem.directory import Directory
 from test_utils.os_utils import is_mounted, drop_caches, DropCachesMode
-from test_utils.size import Size, Unit
+from types.size import Size, Unit
 
 DEBUGFS_MOUNT_POINT = "/sys/kernel/debug"
 PREFIX = "trace_"