<i18n dev> RFR: 8294472: Remove redundant rawtypes suppression in AbstractChronology

[Andrey Turbanov]

Found this redundant suppressions by IntelliJ IDEA inspection.
Seems initially `Chronology` was generic class?

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Commit messages:
 - [PATCH] Remove redundant rawtypes suppression in AbstractChronology

Changes: https://git.openjdk.org/jdk/pull/10433/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10433&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294472
  Stats: 7 lines in 1 file changed: 0 ins; 5 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/10433.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10433/head:pull/10433

PR: https://git.openjdk.org/jdk/pull/10433