RFR: 8309501: Remove workaround in bin/idea.sh for non standard JVMCI file layout

[Tom Rodriguez]

This allows bin/idea.sh to properly see the JVMCI files again.

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Commit messages:
 - 8309501: Remove workaround in bin/idea.sh for non standard JVMCI file layout

Changes: https://git.openjdk.org/jdk/pull/14318/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14318&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309501
  Stats: 12 lines in 1 file changed: 0 ins; 10 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14318.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14318/head:pull/14318

PR: https://git.openjdk.org/jdk/pull/14318