fix: remove unsued env vars

Author: asajjad2

lms/envs/common.py

@@ -720,27 +720,6 @@
 # .. regardless of Discovery service data.
 COURSE_ACCESS_DURATION_MAX_WEEKS = 18
 
-# Used with XQueue
-XQUEUE_WAITTIME_BETWEEN_REQUESTS = 5  # seconds
-XQUEUE_INTERFACE = {
-    'url': 'http://localhost:18040',
-    'basic_auth': ['edx', 'edx'],
-    'django_auth': {
-        'username': 'lms',
-        'password': 'password'
-    }
-}
-
-# Used with Email sending
-RETRY_ACTIVATION_EMAIL_MAX_ATTEMPTS = 5
-RETRY_ACTIVATION_EMAIL_TIMEOUT = 0.5
-
-# Software Secure request retry settings
-# Time in seconds before a retry of the task should be 60 mints.
-SOFTWARE_SECURE_REQUEST_RETRY_DELAY = 60 * 60
-# Maximum of 6 retries before giving up.
-SOFTWARE_SECURE_RETRY_MAX_ATTEMPTS = 6
-
 RETRY_CALENDAR_SYNC_EMAIL_MAX_ATTEMPTS = 5
 
 ############################# SET PATH INFORMATION #############################