Eliminate temREDUNDANT_SEND_MAX (RIPD-590):

The rules for when a SendMax is redundant are complicated. It is easier to always allow a SendMax and eliminate temREDUNDANT_SEND_MAX.

Reviewers: @JoelKatz, @scottschurr 
Yup.  I read David's comments in the JIRA the same way you do.  So I'm guessing you did the right thing.  I'll give it a +1.  But we should probably wait for David's review (yup, I see he's the primary reviewer).  I'm sure that's exactly your plan.