Reduce captions wait time.

lms/djangoapps/courseware/features/video.py

@@ -438,7 +438,7 @@ def error_message_has_correct_text(_step):
 @step('I make sure captions are (.+)$')
 def set_captions_visibility_state(_step, captions_state):
     SELECTOR = '.closed .subtitles'
-    if world.is_css_not_present(SELECTOR, wait_time=30):
+    if world.is_css_not_present(SELECTOR):
         if captions_state == 'closed':
             world.css_click('.hide-subtitles')
     else: