[btcsuite/btcd] b87723: btcd: Remove peer-specific logging funcs. (#675)

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: b87723cd94ea11c29e22c4372ba4fe96886e7c83
      
https://github.com/btcsuite/btcd/commit/b87723cd94ea11c29e22c4372ba4fe96886e7c83
  Author: Dave Collins <d...@davec.name>
  Date:   2016-04-20 (Wed, 20 Apr 2016)

  Changed paths:
    M log.go

  Log Message:
  -----------
  btcd: Remove peer-specific logging funcs. (#675)

This removes the logging functions that are now implemented in the peer
package as they are no longer used by btcd itself and should have been
removed when they were copied into the peer package.