RFR: 8128: Remove redundant semicolons

[Christoph Dreis]

Hi,

this is almost too trivial so feel free to decline it, but I just noticed a few redundant semicolons while diving through the code.

Cheers,
Christoph

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Commit messages:
 - Fix copyright dates
 - Remove redundant semicolons

Changes: https://git.openjdk.org/jmc/pull/523/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=523&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8128
  Stats: 8 lines in 4 files changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jmc/pull/523.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/523/head:pull/523

PR: https://git.openjdk.org/jmc/pull/523