[py] Removing unused import to fix linter

Author: diemol

py/test/selenium/webdriver/common/bidi_tests.py

@@ -16,7 +16,6 @@
 # under the License.
 import pytest
 
-from selenium.common.exceptions import InvalidSelectorException
 from selenium.webdriver.common.by import By
 from selenium.webdriver.common.log import Log
 from selenium.webdriver.support import expected_conditions as EC