Remove redundent DynamoDB installation.

.travis.yml

@@ -129,20 +129,6 @@ before_install:
             source "$HOME/virtualenvs/$PYPY_VERSION/bin/activate"
             which python
           fi
-    - |
-          if [[ "$TOXENV" == *dynamodb ]]; then
-              sudo apt-get update && sudo apt-get install -y default-jre supervisor
-              mkdir /opt/dynamodb-local
-              cd /opt/dynamodb-local && curl --retry 5 --retry-delay 1 -L http://dynamodb-local.s3-website-us-west-2.amazonaws.com/dynamodb_local_latest.tar.gz | tar zx
-              cd -
-              echo '[program:dynamodb-local]' | sudo tee /etc/supervisor/conf.d/dynamodb-local.conf
-              echo 'command=java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -inMemory' | sudo tee -a /etc/supervisor/conf.d/dynamodb-local.conf
-              echo 'directory=/opt/dynamodb-local' | sudo tee -a /etc/supervisor/conf.d/dynamodb-local.conf
-              sudo service supervisor stop
-              sudo service supervisor start
-              sleep 10
-              curl localhost:8000
-          fi
     - |
           wget -qO - https://packages.couchbase.com/ubuntu/couchbase.key | sudo apt-key add -
           sudo apt-add-repository -y 'deb http://packages.couchbase.com/ubuntu trusty trusty/main'