RFR: 8272850: Drop zapping values in the Zap* option descriptions

[Aleksey Shipilev]

Removing a little debugging pitfall. See the bug report for more discussion. 
Since this does not touch any product option, I don't believe it requires a CSR.

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Commit messages:
 - Drop the patterns from the options

Changes: https://git.openjdk.java.net/jdk/pull/5223/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5223&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272850
  Stats: 5 lines in 1 file changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5223.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5223/head:pull/5223

PR: https://git.openjdk.java.net/jdk/pull/5223