BIND 10 #348: remove unnecessary cast from pydnspp binding

[BIND 10 Development]

#348: remove unnecessary cast from pydnspp binding
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      Reporter:  jinmei        |        Owner:  UnAssigned           
          Type:  defect        |       Status:  reviewing            
      Priority:  critical      |    Milestone:  y2 12 month milestone
     Component:  build system  |   Resolution:                       
      Keywords:                |    Sensitive:  0                    
Estimatedhours:  0.0           |        Hours:  0                    
      Billable:  1             |   Totalhours:  0                    
      Internal:  0             |  
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Changes (by jinmei):

  * owner:  jreed => UnAssigned
  * status:  new => reviewing


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Ticket URL: <https://bind10.isc.org/ticket/348#comment:1>
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