Jenkinsfile: remove echo because won't print cred values

Author: greenrobot

Jenkinsfile

@@ -51,7 +51,6 @@ pipeline {
  BINTRAY_LOGIN = credentials('bintray_login')
  }
  steps {
- sh 'echo "Uploading to ${BINTRAY_URL} using user ${BINTRAY_LOGIN_USR}..."'
  sh './gradlew --stacktrace -PpreferedRepo=${BINTRAY_URL} -PpreferedUsername=${BINTRAY_LOGIN_USR} -PpreferedPassword=${BINTRAY_LOGIN_PSW} uploadArchives'
  }
  }