Revert "Skip test_resize_volume_backed_server_confirm for now"

This reverts commit 9d0424960291f070d31ef122ff6350937ddd98aa.

Depends-On: I25f65bcc76b83f31a8fce77c2b751d2d167ffc7e

Change-Id: I086e59cc49cd5ab2edeae852add3211bec79d30b
Related-Bug: #1580625
diff --git a/tempest/scenario/test_server_advanced_ops.py b/tempest/scenario/test_server_advanced_ops.py
index dc0f3bc..504d72b 100644
--- a/tempest/scenario/test_server_advanced_ops.py
+++ b/tempest/scenario/test_server_advanced_ops.py
@@ -18,7 +18,6 @@
 
 from tempest.common import waiters
 from tempest import config
-from tempest.lib import decorators
 from tempest.scenario import manager
 from tempest import test
 
@@ -51,7 +50,6 @@
     @test.idempotent_id('e6c28180-7454-4b59-b188-0257af08a63b')
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize is not available.')
-    @decorators.skip_because(bug='1580625')
     @test.services('compute', 'volume')
     def test_resize_volume_backed_server_confirm(self):
         # We create an instance for use in this test