RFR: 8279024: Remove javascript references from clhsdb.html

[Chris Plummer]

clhsdb no longer supports javascript. Remove some remaining references in the docs. I also removed some script references.

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Commit messages:
 - minor fix to doc
 - Remove javascript references

Changes: https://git.openjdk.java.net/jdk/pull/6903/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6903&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8279024
  Stats: 52 lines in 2 files changed: 1 ins; 49 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6903.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6903/head:pull/6903

PR: https://git.openjdk.java.net/jdk/pull/6903