RFR: JDK-8267187: Remove deprecated constructor for Log

[Jonathan Gibbons]

Please review a change to remove a deprecated constructor in Log, which used to be needed by javadoc.

A previous version of this (https://github.com/openjdk/jdk/pull/4037) caused problems for javadoc, which have now been addressed in separate updates, and so finally, this constructor can safely be removed.

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

Changes: https://git.openjdk.java.net/jdk/pull/4404/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4404&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267187
  Stats: 34 lines in 1 file changed: 0 ins; 34 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4404.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4404/head:pull/4404

PR: https://git.openjdk.java.net/jdk/pull/4404