RFR (S) 8229900: RedefineDeleteJmethod.java fails with -Xcheck:jni

[coleen . phillimore]

Summary: Remove RedefineClasses adjustment and test, but improve 
checking for method/class matching.

Tested with tier1 with -Xcheck:jni locally, and tier1 on Oracle platforms.
open webrev at http://cr.openjdk.java.net/~coleenp/2019/8229900.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8229900

Thanks,
Coleen