Scilab JAVA_HOME environment fix

This might be needed on Github Actions as well as Travis??

Tools/CI-linux-environment.sh

@@ -29,5 +29,11 @@ case "$SWIGLANG" in
 			set -x
 		fi
 		;;
+	"scilab")
+		# Travis has the wrong version of Java pre-installed resulting in error using scilab:
+		# /usr/bin/scilab-bin: error while loading shared libraries: libjava.so: cannot open shared object file: No such file or directory
+		echo "JAVA_HOME was set to $JAVA_HOME"
+		unset JAVA_HOME
+		;;
 	*)	;;
 esac