[jfx22u] RFR: 8328749: Remove unused imports in javafx.web

[Andy Goryachev]

8328749: Remove unused imports in javafx.web

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Commit messages:
 - Backport a85af134f9255f140ea8f9f8e63a19e74f2d1731

Changes: https://git.openjdk.org/jfx22u/pull/22/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx22u&pr=22&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328749
  Stats: 21 lines in 3 files changed: 4 ins; 13 del; 4 mod
  Patch: https://git.openjdk.org/jfx22u/pull/22.diff
  Fetch: git fetch https://git.openjdk.org/jfx22u.git pull/22/head:pull/22

PR: https://git.openjdk.org/jfx22u/pull/22