[PATCH 06/11] iotests/264: fix style

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Fix long line, extra import and one mypy complaint about incompatible
int and float.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/264 | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/tests/qemu-iotests/264 b/tests/qemu-iotests/264
index 666f164ed8..0e8b213657 100755
--- a/tests/qemu-iotests/264
+++ b/tests/qemu-iotests/264
@@ -21,8 +21,7 @@
 import time
 
 import iotests
-from iotests import qemu_img_create, qemu_io_silent_check, file_path, \
-        qemu_nbd_popen, log
+from iotests import qemu_img_create, file_path, qemu_nbd_popen, log
 
 iotests.script_initialize(
     supported_fmts=['qcow2'],
@@ -31,7 +30,7 @@ iotests.script_initialize(
 disk_a, disk_b, nbd_sock = file_path('disk_a', 'disk_b', 'nbd-sock')
 nbd_uri = 'nbd+unix:///?socket=' + nbd_sock
 size = 5 * 1024 * 1024
-wait_limit = 3
+wait_limit = 3.0
 wait_step = 0.2
 
 qemu_img_create('-f', iotests.imgfmt, disk_a, str(size))
@@ -48,11 +47,11 @@ with qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b):
                   'file': {'driver': 'nbd',
                            'server': {'type': 'unix', 'path': nbd_sock},
                            'reconnect-delay': 10}})
-    vm.qmp_log('blockdev-backup', device='drive0', sync='full', target='backup0',
-               speed=(1 * 1024 * 1024))
+    vm.qmp_log('blockdev-backup', device='drive0', sync='full',
+               target='backup0', speed=(1 * 1024 * 1024))
 
     # Wait for some progress
-    t = 0
+    t = 0.0
     while t < wait_limit:
         jobs = vm.qmp('query-block-jobs')['return']
         if jobs and jobs[0]['offset'] > 0:
-- 
2.21.3