RFR: 8301455: comments in TestTypeAnnotations still refer to resolved JDK-8068737

[Vicente Romero]

Simple patch removing comment references to an already fixed bug in test TestTypeAnnotations.java

TIA

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Commit messages:
 - 8301455: comments in TestTypeAnnotations still refer to resolved JDK-8068737

Changes: https://git.openjdk.org/jdk/pull/13600/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13600&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301455
  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13600.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13600/head:pull/13600

PR: https://git.openjdk.org/jdk/pull/13600