fix machine configuration for circleci

Author: yigit

circle.yml

@@ -19,9 +19,8 @@ test:
 machine:
   environment:
       GRADLE_OPTS: '-Dorg.gradle.jvmargs="-Xmx3000m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$CIRCLE_ARTIFACTS/oom.hprof"'
-  machine:
-    java:
-      version: openjdk8
+  java:
+    version: openjdk8
   dependencies:
     pre:
       - echo y | android update sdk --no-ui --all --filter "tools,android-24,build-tools-24.0.0,platform-tools,extra-android-m2repository,extra-google-m2repository,extra-google-google_play_services"