RFR: 8295767: Remove unused fields in sun.awt.geom.Edge

[Andrey Turbanov]

Remove couple of unused `static` fields in `sun.awt.geom.Edge` class.

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Commit messages:
 - [PATCH] Remove unused fields in sun.awt.geom.Edge

Changes: https://git.openjdk.org/jdk/pull/10720/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10720&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295767
  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/10720.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10720/head:pull/10720

PR: https://git.openjdk.org/jdk/pull/10720