INTEGRATION_joint_spawn: stop testing joint with world as child, sinc…

…e sdf 1.7 no longer supports that

test/integration/joint_spawn.cc

@@ -162,34 +162,7 @@ void JointSpawningTest::SpawnJointTypes(const std::string &_physicsEngine,
     }
   }
 
-  if (_physicsEngine == "dart")
-  {
-    // DART assumes that: (i) every link has its parent joint (ii) root link
-    // is the only link that doesn't have parent link.
-    // Child world link breaks dart for now. Do we need to support it?
-    gzerr << "Skip tests for child world link cases "
-          << "since DART does not allow joint with world as child. "
-          << "Please see issue #914. "
-          << "(https://bitbucket.org/osrf/gazebo/issue/914)"
-          << std::endl;
-  }
-  else
-  {
-    gzdbg << "SpawnJoint " << _jointType << " world parent" << std::endl;
-    physics::JointPtr joint = SpawnJoint(_jointType, true, false);
-    ASSERT_TRUE(joint != nullptr);
-    // Check parent link
-    physics::LinkPtr child = joint->GetChild();
-    physics::LinkPtr parent = joint->GetParent();
-    EXPECT_TRUE(child == nullptr);
-    ASSERT_TRUE(parent != nullptr);
-    EXPECT_EQ(parent->GetChildJoints().size(), 1u);
-    EXPECT_EQ(parent->GetParentJoints().size(), 0u);
-    for (unsigned int i = 0; i < joint->DOF(); ++i)
-    {
-      CheckJointProperties(i, joint);
-    }
-  }
+  // world as child of a joint is not supported in sdf 1.7
 }
 
 ////////////////////////////////////////////////////////////////////////