Revert "Add support for Elasticsearch version 7.10.*"

Revert submission 291062

Reason for revert: requires an httpclient that Google cannot support
Reverted Changes:
I1fc91bce9:Align http dependencies with elasticsearch-rest-cl...
Ifb941eea6:Add support for Elasticsearch version 7.10.*
I7d76ece60:Add support for Elasticsearch version 7.9.*

Change-Id: I740e06058469a0ab12b14c7c616940bf429d0de7
9 files changed
tree: edca6c06e9bdf7bba6d40ad594e2444256fec0b6
  1. java/
  2. javatests/