Github user asfgit closed the pull request at:
https://github.com/apache/zeppelin/pull/2278
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GitHub user cloverhearts opened a pull request:
https://github.com/apache/zeppelin/pull/2278
[ZEPPELIN-2431] Corrected deletion of notes by incorrect interpreter.json
### What is this PR for?
We sometimes can not delete a note, or we will be accompanied by an NPE for
