This change is related to BZ-956805.

There's a dependency issue that causes intermittent infinispan startup
failures in EAP6. Part of the related systems have been changed and I
can't find occurances of this issue in upstream or replicate it because
of those changes. However the dependency issue does still technically
exist.
WFLY-1906 AS7-4547 Remove the -XX:+TieredCompilation JVM option from the standalone.bat