RFR(jdk10/jaxp) 8183519: XMLInputFactory.newFactory() is marked as deprecated

[huizhe wang]

Please review the change to remove the incorrectly added @Deprecated 
annotation. The webrevs are the same as the specification of the CSR 
(https://bugs.openjdk.java.net/browse/JDK-8183894).

JBS: https://bugs.openjdk.java.net/browse/JDK-8183519
webrevs: http://cr.openjdk.java.net/~joehw/jdk10/8183519/webrev/
Thanks,
Joe