RFR: JDK-8267187: Remove deprecated constructor for Log

[Jonathan Gibbons]

In the course of other work, I came across this deprecated constructor in Log which just existed for a public entry point in javadoc which has already been removed.

There is one remaining use in javadoc, which can be changed to use an alternate non-deprecated constructor.

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Commit messages:
 - JDK-8267187: Remove deprecated constructor for Log

Changes: https://git.openjdk.java.net/jdk/pull/4037/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4037&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267187
  Stats: 15 lines in 2 files changed: 0 ins; 14 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4037.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4037/head:pull/4037

PR: https://git.openjdk.java.net/jdk/pull/4037