remove unused circle ci config

.circleci/config.yml

@@ -1,43 +0,0 @@
-# Java Gradle CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-java/ for more details
-#
-version: 2
-jobs:
-  build:
-    docker:
-    # specify the version you desire here
-    - image: circleci/openjdk:8-jdk
-
-    # Specify service dependencies here if necessary
-    # CircleCI maintains a library of pre-built images
-    # documented at https://circleci.com/docs/2.0/circleci-images/
-    # - image: circleci/postgres:9.4
-
-    working_directory: ~/repo
-
-    environment:
-      # Customize the JVM maximum heap limit
-      JVM_OPTS: -Xmx3200m
-      TERM: dumb
-
-    steps:
-    - checkout
-
-    # Download and cache dependencies
-    - restore_cache:
-        keys:
-        - v1-dependencies-{{ checksum "build.gradle" }}
-        # fallback to using the latest cache if no exact match is found
-        - v1-dependencies-
-
-    - run: gradle dependencies
-
-    - save_cache:
-        paths:
-        - ~/.gradle
-        key: v1-dependencies-{{ checksum "build.gradle" }}
-
-    # run tests!
-    - run: gradle test
-