Revert "Add allow_railures for jruby-head until #1737 resolved"
Revert "Add allow_railures for jruby-head until #1737 resolved"

This reverts commit 5fe95d42f48d134406ac9f607aecef6e0a5b5fb3.

rsim/oracle-enhanced,rshell/oracle-enhanced,yahonda/oracle-enhanced,yahonda/oracle-enhanced,rshell/oracle-enhanced,rsim/oracle-enhanced