[ZEPPELIN-2025] Cleanup R Tutorial ### What is this PR for?
1. Remove useless paragraphs in R tutorial 2. Prettify layout I attached screenshots for comparison. See the screenshot section below. ### What type of PR is it? [Improvement] ### Todos Done ### What is the Jira issue? [ZEPPELIN-2025](https://issues.apache.org/jira/browse/ZEPPELIN-2025) ### How should this be tested? 1. Run Zeppelin 2. See the R tutorial ### Screenshots (if appropriate) #### Before  #### After  ### Questions: * Does the licenses files need update? - NO * Is there breaking changes for older versions? - NO * Does this needs documentation? - NO Author: 1ambda <[email protected]> Closes #1955 from 1ambda/ZEPPELIN-2025/cleanup-r-tutorial and squashes the following commits: 20d551e [1ambda] fix: Prettify layout in medium size 178178e [1ambda] fix: Cleanup R Tutorial Project: http://git-wip-us.apache.org/repos/asf/zeppelin/repo Commit: http://git-wip-us.apache.org/repos/asf/zeppelin/commit/7e045728 Tree: http://git-wip-us.apache.org/repos/asf/zeppelin/tree/7e045728 Diff: http://git-wip-us.apache.org/repos/asf/zeppelin/diff/7e045728 Branch: refs/heads/master Commit: 7e045728e08b8642731ab6ebd29189305ede7567 Parents: 42bcf42 Author: 1ambda <[email protected]> Authored: Sun Jan 29 03:26:28 2017 +0900 Committer: Mina Lee <[email protected]> Committed: Tue Jan 31 15:56:47 2017 +0900 ---------------------------------------------------------------------- notebook/2BWJFTXKJ/note.json | 946 ++++++++++++++++++++------------------ 1 file changed, 495 insertions(+), 451 deletions(-) ----------------------------------------------------------------------
