RFR: 8042418: Remove JVM_FindClassFromClassLoader

[Coleen Phillimore]

Summary: The function has been replaced so is no longer used.

This function was replaced with a better FindClassFromCaller function.   
The compatibility request (CCC) was approved.

open webrev at http://cr.openjdk.java.net/~coleenp/8042418_jdk/
open webrev at http://cr.openjdk.java.net/~coleenp/8042418_hs
bug link https://bugs.openjdk.java.net/browse/JDK-8042418

Tested with jdk_core jtreg tests on linux/x64.

Thanks,
Coleen