[jdk11u-dev] RFR: 8263530: sun.awt.X11.ListHelper.removeAll() should use clear()

[Sonia Zaldana Calles]

8263530: sun.awt.X11.ListHelper.removeAll() should use clear()

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Commit messages:
 - Backport 7b4aefe9e1e5bcd370de1bf510a1ed97e57a65bb

Changes: https://git.openjdk.org/jdk11u-dev/pull/2216/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2216&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8263530
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2216.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2216/head:pull/2216

PR: https://git.openjdk.org/jdk11u-dev/pull/2216