Merge pull request #103 from xuwei-k/patch-2

travis-ci no longer support oraclejdk7

Author: analytically

.travis.yml

@@ -8,7 +8,6 @@ scala:
 env:
 - JDK=oraclejdk8
 - JDK=openjdk8
-- JDK=oraclejdk7
 - JDK=openjdk7
 addons:
   # https://github.com/travis-ci/travis-ci/issues/5227#issuecomment-165131913
@@ -20,11 +19,7 @@ before_script:
 matrix:
   # scala 2.12 and 2.13 require java 8
   exclude:
-    - scala: 2.12.4
-      env: JDK=oraclejdk7
     - scala: 2.12.4
       env: JDK=openjdk7
-    - scala: 2.13.0-M2
-      env: JDK=oraclejdk7
     - scala: 2.13.0-M2
       env: JDK=openjdk7