Since upstream Java reverted the strict classpath checks, it's
not needed anymore.

See discussion in https://gerrit.libreoffice.org/#/c/63118 and
http://hg.openjdk.java.net/jdk-updates/jdk11u/rev/8513ac27b651

Change-Id: Iff863702b1aeda157c8e230ab36372a71dcfb4bb
Todo: tdf#121925
Reviewed-on: https://gerrit.libreoffice.org/64634
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>