BIND 10 #2750: support DomainTree::remove()

[BIND 10 Development]

#2750: support DomainTree::remove()
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            Reporter:  jinmei        |                        Owner:  muks
                Type:  task          |                       Status:
            Priority:  medium        |  reviewing
           Component:  data source   |                    Milestone:
            Keywords:                |  Sprint-20130917
           Sensitive:  0             |                   Resolution:
         Sub-Project:  DNS           |                 CVSS Scoring:
Estimated Difficulty:  7             |              Defect Severity:  N/A
         Total Hours:  0             |  Feature Depending on Ticket:
                                     |  shared memory data source
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by vorner):

 Ah, also this one. Would it make sense to switch the condition to positive
 one, for readability?

 {{{#!c++
         if (!node->getRight()) {
             child = node->getLeft();
         } else {
             child = node->getRight();
         }
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2750#comment:20>
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