Revert "AMBARI-4055. set core file size on hosts to get core dump when JVM crashes (Dmytro Shkvyra via dlysnichenko)"

This reverts commit 4e41f12f7060605896affd1d30f3335694d4c434.
AMBARI-4108 No components in manage config group > select hosts during install. (Mikhail Bayuk via ababiichuk)