BIND 10 #3048: Remove log messages from ServerHooks methods used during hook registration

[BIND 10 Development]

#3048: Remove log messages from ServerHooks methods used during hook registration
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                   Reporter:         |                 Owner:
  stephen                            |                Status:  new
                       Type:         |             Milestone:  Sprint-
  defect                             |  DHCP-20130717
                   Priority:         |              Keywords:
  medium                             |             Sensitive:  0
                  Component:  dhcp   |           Sub-Project:  Core
               CVSS Scoring:         |  Estimated Difficulty:  0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 One technique recommended for initializing the list of hooks in a server
 involves the use of static initialization functions.  However, the
 presence of logging messages in the ServerHooks constructor and
 registerHooks() method prevents this because logging is not initialized at
 this stage.

 This ticket removes two messages (one a debug message and one a warning
 message) to allow the technique to work.

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Ticket URL: <http://bind10.isc.org/ticket/3048>
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