RFR: 8332085: Remove 10 year old transition check in GenerateCurrencyData tool

[Naoto Sato]

The build tool that generates the currency data had a check that throws an exception (causes a build failure) if the transition date is more than 10 years away (past/future). This caused a build failure in 8u-RI repository. Since the risk of build failure seems to exceed the potential benefit (make the data clean), removing the check is appropriate.

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Commit messages:
 - initial commit

Changes: https://git.openjdk.org/jdk/pull/19183/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19183&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332085
  Stats: 4 lines in 1 file changed: 0 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/19183.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19183/head:pull/19183

PR: https://git.openjdk.org/jdk/pull/19183