[jdk11u-dev] RFR: 8309095: Remove UTF-8 character from TaskbarPositionTest.java

[Goetz Lindenmaier]

I backport this for parity with 11.0.21-oracle.

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Commit messages:
 - Backport 07f2070411b3bff5608166ceae0e0bdbf155e7c2

Changes: https://git.openjdk.org/jdk11u-dev/pull/2212/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2212&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309095
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2212.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2212/head:pull/2212

PR: https://git.openjdk.org/jdk11u-dev/pull/2212