RFR: 8076089: Cleanup: Inline & remove sun.management.Util.newException

[Jaikiran Pai]

Can I please get a review for this cleanup that's requested in https://bugs.openjdk.java.net/browse/JDK-8076089?

The change here removes a package private method `sun.management.Util.newException(Exception e)` and inlines its implementation at the caller locations.

Given the nature of this change no new jtreg tests have been added.

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Commit messages:
 - 8076089: Cleanup: Inline & remove sun.management.Util.newException

Changes: https://git.openjdk.java.net/jdk/pull/7226/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7226&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8076089
  Stats: 11 lines in 3 files changed: 0 ins; 4 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7226.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7226/head:pull/7226

PR: https://git.openjdk.java.net/jdk/pull/7226