RFR: JDK-8294869: Correct failure of RemovedJDKInternals.java after JDK-8294618

[Joe Darcy]

Fix strings matches to updated strings.

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Commit messages:
 - JDK-8294869: Correct failure of RemovedJDKInternals.java after JDK-8294618

Changes: https://git.openjdk.org/jdk/pull/10580/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10580&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294869
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/10580.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10580/head:pull/10580

PR: https://git.openjdk.org/jdk/pull/10580