RFR [14/java.xml] 8228854: Default ErrorListener reports warnings and errors to the console

[Joe Wang]

Please review a patch that removes some warnings and errors printed out 
to the console.

JBS: https://bugs.openjdk.java.net/browse/JDK-8228854
CSR: https://bugs.openjdk.java.net/browse/JDK-8228973

webrev: http://cr.openjdk.java.net/~joehw/jdk14/8228854/webrev/

Thanks,
Joe