Cannot start EAP installed by installer on Solaris + JDK11

When installer is executed on Solaris platform, in the end of the installation it adds "-d64" option to JAVA_OPTS in various scripts in bin directory. This is a problem with JDK11 as this option is no longer supported for JDK10+ (https://bugs.openjdk.java.net/browse/JDK-8169646).

This was done historically to support older JVMs and HPUX/Solaris. Now when we dropped HPUX support and are requiring JDK8+, we should drop this addition from installer.
This should be safe as Oracle don't release 32bit version for Solaris with JDK8+ anyway https://bugs.openjdk.java.net/browse/JDK-8023288.