RFR: 8309867: redundant class field RSAPadding.md

[Xue-Lei Andrew Fan]

Hi,

May I get this simple update reviewed?

The class field RSAPadding.md can be converted to a local variable of the constructor, and save the class footprint.

Thanks,
Xuelei

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Commit messages:
 - 8309867: redundant class field RSAPadding.md

Changes: https://git.openjdk.org/jdk/pull/14422/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14422&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309867
  Stats: 6 lines in 1 file changed: 2 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/14422.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14422/head:pull/14422

PR: https://git.openjdk.org/jdk/pull/14422