[jdk21u] RFR: 8317327: Remove JT_JAVA dead code in jib-profiles.js

[Ludvig Janiuk]

Backporting a clean cleanup

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Commit messages:
 - 8317327: Remove JT_JAVA dead code in jib-profiles.js

Changes: https://git.openjdk.org/jdk21u/pull/239/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=239&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317327
  Stats: 4 lines in 1 file changed: 0 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u/pull/239.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/239/head:pull/239

PR: https://git.openjdk.org/jdk21u/pull/239