RFR: JDK-8288368: simplify code in ValueTaglet, remove redundant code [v2]

[Jonathan Gibbons]

> Please review an almost trivial cleanup change, to eliminate the call to an ill-considered method in Utils, and then remove the method itself.
> 
> Verified that there is no significant change in the generated docs as a result off the change. (Just changes in timestamp/version info).

Jonathan Gibbons has updated the pull request incrementally with one additional commit since the last revision:

  Update src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/taglets/ValueTaglet.java
  
  Co-authored-by: Pavel Rappo <32523691+pavelrappo at users.noreply.github.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9149/files
  - new: https://git.openjdk.org/jdk/pull/9149/files/2d9b8ed1..5dcf3919

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9149&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9149&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9149.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9149/head:pull/9149

PR: https://git.openjdk.org/jdk/pull/9149