FAB-2451 fix readthedocs build failure

https://readthedocs.org/projects/hyperledger-fabric/builds/5066508/

Change-Id: Iccdc9e178f94a4a661b2e058ef87311e5d0d6327
Signed-off-by: rameshthoomu <rameshbabu.thoomu@gmail.com>

mkdocs.yml

@@ -69,13 +69,6 @@ pages:
 
 - Getting Help:
   - Troubleshooting: troubleshooting.md
-  - FAQs:
-    - Architecture: FAQ/architecture_FAQ.md
-    - Chaincode: FAQ/chaincode_FAQ.md
-    - Confidentiality: FAQ/confidentiality_FAQ.md
-    - Consensus: FAQ/consensus_FAQ.md
-    - Identity: FAQ/identity_management_FAQ.md
-    - Usage: FAQ/usage_FAQ.md
 
 - Appendix:
   - Release notes: releases.md