diff --git a/.travis.yml b/.travis.yml
index a1c13a31a9f68bccefdf4e3255cb28991ae50580..7fb7420d8d33426d2e5873af9bc2fb4bacf80946 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,12 +15,6 @@ install: true
 
 # define ci-stage
 script:
-  # travis env
-  - echo ${TRAVIS_PULL_REQUEST}
-  - echo ${TRAVIS_PULL_REQUEST_BRANCH}
-  - echo ${TRAVIS_PULL_REQUEST_SLUG}
-  - echo ${TRAVIS_PULL_REQUEST_SHA}
-  - echo ${TRAVIS_REPO_SLUG}
   # license-check
   - echo 'start license check'
   - go fmt ./... && [[ -z `git status -s` ]]