[py] remove warnings import

Author: titusfortner

py/selenium/webdriver/common/actions/pointer_actions.py

@@ -14,7 +14,6 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-import warnings
 
 from selenium.webdriver.remote.webelement import WebElement
 from . import interaction