[Integrated] [foreign-jextract] RFR: 8242376: update jextract samples to avoid --filter option

[Athijegannathan Sundararajan]

Changeset: ba685d8f
Author:    Athijegannathan Sundararajan <sundar at openjdk.org>
Date:      2020-04-08 14:20:20 +0000
URL:       https://git.openjdk.java.net/panama-foreign/commit/ba685d8f

8242376: update jextract samples to avoid --filter option

Reviewed-by: mcimadamore

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