RFR: JDK-8267574: Dead code in HtmlStyle/HtmlDocletWriter [v2]

[Jonathan Gibbons]

> Please review a simple `noreg-cleanup` change to remove some dead code.

Jonathan Gibbons has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - review feedback: remove emphasized-phrase completely!
 - review feedback: remove emphasized-phrase
 - Merge remote-tracking branch 'upstream/master' into HtmlStyle-interfaceName
 - JDK-8267574: Dead code in HtmlStyle/HtmlDocletWriter

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4154/files
  - new: https://git.openjdk.java.net/jdk/pull/4154/files/c33a8bd9..ac0124ce

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4154&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4154&range=00-01

  Stats: 4175 lines in 1040 files changed: 1757 ins; 684 del; 1734 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4154.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4154/head:pull/4154

PR: https://git.openjdk.java.net/jdk/pull/4154