removed outdated linkedin compliance fixes - test compliance import

Author: jtroussard

tests/test_compliance_fixes.py

@@ -14,7 +14,6 @@
 from requests_oauthlib import OAuth2Session
 from requests_oauthlib.compliance_fixes import facebook_compliance_fix
 from requests_oauthlib.compliance_fixes import fitbit_compliance_fix
-from requests_oauthlib.compliance_fixes import linkedin_compliance_fix
 from requests_oauthlib.compliance_fixes import mailchimp_compliance_fix
 from requests_oauthlib.compliance_fixes import weibo_compliance_fix
 from requests_oauthlib.compliance_fixes import slack_compliance_fix