This is to remove unused LOG to keep code clean.

Change-Id: Ie44659f3b7af9612f127f7d46bb2c1481b6a634f

This method was drepcated and will be removed in
Ie8903e23fc88c03f4da78292a759d18c6a135064, so don't
use it anymore.

Change-Id: If2a6249cfd4ea1cb5eb4dfc4e3333ac9a5aafbf6

The docs no longer matched reality.

Change-Id: I9ee98e16fc03489569bbed8355416a73f7bc02ff
Closes-Bug: 1579890

Change-Id: I74765d376cdaa2c23a6aaa4a74517da4e2df7ad8

Somehow this passed through the gate and now it is
causing related failures, so fix it so that those other
failures will not happen.

Change-Id: Idb046b0e4e23af49c947a80cf6f77fef3a9ec0c8

It appears folks are using the taskflow.utils code in there own
code-bases (likely taking it from the examples) which we do not
want to encourage, so remove the usage of **most** of
taskflow.utils code from the examples so that people are less
likely to copy/paste/reference it.

Change-Id: I0ce3c520de347e3e746e7912aa1366a515458424

When a atom is reverted it can be useful to retain the
result of that 'revert' method being called, so that it
can be later analyzed (or used for various purposes) so
adjust the storage, and actions to enable it to be stored.

Change-Id: I38a9a5f3bf7550e924468bb4a86652cb8beb306c

Since this module contains more than the logbook
class and really is a our generic models that are used
to hold the runtime structure it is more appropriate to
place it under a models module and deprecate the usage
of the old module by placing a warning there (so that
when it is imported that warning is triggered).

Change-Id: I79def5ee08f560d38f2c9dcefd0b33becc2a4d36