BURs: don't try to move wikis/artists twice.

* Remove unnecessary rename_aliased_pages option. This option was always enabled.
* Don't try to rename the artist and wiki page inside AliasAndImplicationImporter
  when an alias is approved. This is already handled by TagAlias#process!.

app/logical/alias_and_implication_importer.rb

@@ -1,11 +1,10 @@
 class AliasAndImplicationImporter
   class Error < RuntimeError; end
-  attr_accessor :text, :commands, :forum_id, :rename_aliased_pages, :skip_secondary_validations
+  attr_accessor :text, :commands, :forum_id, :skip_secondary_validations
 
-  def initialize(text, forum_id, rename_aliased_pages = "0", skip_secondary_validations = true)
+  def initialize(text, forum_id, skip_secondary_validations = true)
     @forum_id = forum_id
     @text = text
-    @rename_aliased_pages = rename_aliased_pages
     @skip_secondary_validations = skip_secondary_validations
   end
 
@@ -19,10 +18,6 @@ class AliasAndImplicationImporter
     validate(tokens)
   end
 
-  def rename_aliased_pages?
-    @rename_aliased_pages == "1"
-  end
-
   def self.tokenize(text)
     text.split(/\r\n|\r|\n/).reject(&:blank?).map do |line|
       line = line.gsub(/[[:space:]]+/, " ").strip
@@ -105,7 +100,6 @@ class AliasAndImplicationImporter
           unless tag_alias.valid?
             raise Error, "Error: #{tag_alias.errors.full_messages.join("; ")} (create alias #{tag_alias.antecedent_name} -> #{tag_alias.consequent_name})"
           end
-          tag_alias.rename_wiki_and_artist if rename_aliased_pages?
           tag_alias.approve!(approver: approver)
 
         when :create_implication