RFR(S) 8222582: [TESTBUG] AbstractMethodErrorTest.java fails with "did not test both cases (interpreted and compiled)."

[Harold Seigel]

Hi,

Please review this small fix to avoid running test 
AbstractMethodErrorTest.java with Graal and remove it from the ProblemList.

Open Webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8222582/webrev/index.html

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8222582

The change was tested by using mach5 testing and checking that the test 
was not run in tier*-graal tasks but was run in non-graal tasks.

Thanks, Harold