"Revert^4 "Make adbconnection start automatically for debuggable apps (on target)"

Needed to tell run-jdwp-tests.sh not to load adbconnection since it
might not be present.

This reverts commit fb57a652.

Reason for revert: Added -XjdwpProvider:none to run-jdwp-tests.sh

Bug: 109505014
Test: ./art/tools/run-libjdwp-tests.sh

Change-Id: I43941f7048ae5b64c6cbe7a8e7c273d47596192c