Removed unnecessary git clone from travis

Author: cmanaha

.travis.yml

@@ -20,7 +20,6 @@ install:
   - mkdir /tmp/elasticsearch
   - wget -O - https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.5.0.tar.gz | tar xz --directory=/tmp/elasticsearch --strip-components=1
   - /tmp/elasticsearch/bin/elasticsearch -d -E script.inline=true -E path.repo=/tmp -E repositories.url.allowed_urls='http://*' -E node.attr.testattr=test
-  - git clone https://github.com/elastic/elasticsearch.git ../elasticsearch
 
 script: tox