Revert "ART: Start RuntimeCallbacks"

jdwp tests failing with:
    STDERR> dalvikvm32 E 01-18 23:14:50 12180 12198 thread-inl.h:137] holding "runtime callbacks lock" at point where thread suspension is expected

Bug: 31684920

This reverts commit 13093d455b8266338fd713b04261c58e9dc2b164.

Change-Id: I94e4154e273d006eecdd485607dcfd96392d6a00
12 files changed