remove trailing empty lines per linter (#5526)

Signed-off-by: Chris O'Haver <cohaver@infoblox.com>

plugin/pkg/log/listener.go

@@ -82,7 +82,6 @@ func (ls *listeners) info(plugin string, v ...interface{}) {
 		l.Info(plugin, v...)
 	}
 	ls.RUnlock()
-
 }
 
 func (ls *listeners) infof(plugin string, format string, v ...interface{}) {

plugin/pkg/log/listener_test.go

@@ -65,7 +65,6 @@ func testListenersCalled(t *testing.T, listenerNames []string, outputs []string)
 			t.Errorf("DeregsiterListener Error %s", err)
 		}
 	}
-
 }
 
 type mockListener struct {