Revert "LACOUNT: Add back lacount mechanism to defer migrating a fetched/read copy...

Revert "LACOUNT:  Add back lacount mechanism to defer migrating a fetched/read copy until after default of 20 consecutive requests from the same node"

This reverts commit 035c0d981bde8c0eee8b3f24ba8e2dc817e5b504.

This is a premature optimization.  Record can bounce between nodes
very quickly if it is a contended record.  There is no need to hold a
record on a node unnecessarily.  In case record contention becomes bad,
enabling sticky records on a database is a better idea.

Conflicts:
	include/ctdb_private.h
	server/ctdb_tunables.c

Signed-off-by: Amitay Isaacs <amitay@gmail.com>