GitHub user sanjaydasgupta opened a pull request:
https://github.com/apache/zeppelin/pull/3013
[ZEPPELIN-3511] remove old button "Download Data as CSV/TSV"
### What is this PR for?
This PR removes the legacy method (button and dropdown near the top left of
each paragraph) for exporting the displayed data as a CSV or TSV file. The
widgets of the legacy method are seen in the images below.


The legacy method is now redundant as a new improved data-export menu is
available (top right corner of data display grid). The new method also does not
suffer from certain issues in the legacy method. The new method is seen in the
image below.

### What type of PR is it?
[Improvement]
### Todos
### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-3511
### How should this be tested?
1) Travis CI pass
2) Manual checking (see screenshot below)
### Screenshots (if appropriate)

### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sanjaydasgupta/zeppelin
z3511-remove-old-download-button
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/3013.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3013
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commit cabb83e82a2e77326e214a6e506e53f6fb00ff07
Author: Sanjay Dasgupta <sanjay.dasgupta@...>
Date: 2018-06-10T05:32:22Z
z3511-remove-old-download-button: Initial updates
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