uninstall: remove duplicated method

This was moved to Keg, but looks like I forgot to get rid of it here.

Library/Homebrew/cmd/uninstall.rb

@@ -92,39 +92,6 @@ def check_for_dependents(kegs)
     true
   end
 
-  # Will return some kegs, and some dependencies, if they're present.
-  # For efficiency, we don't bother trying to get complete data.
-  def find_some_installed_dependents(kegs)
-    kegs.each do |keg|
-      dependents = keg.installed_dependents - kegs
-      dependents.map! { |d| "#{d.name} #{d.version}" }
-      return [keg], dependents if dependents.any?
-    end
-
-    # Find formulae that didn't have dependencies saved in all of their kegs,
-    # so need them to be calculated now.
-    #
-    # This happens after the initial dependency check because it's sloooow.
-    remaining_formulae = Formula.installed.select { |f|
-      f.installed_kegs.any? { |k| Tab.for_keg(k).runtime_dependencies.nil? }
-    }
-
-    keg_names = kegs.map(&:name)
-    kegs_by_name = kegs.group_by(&:to_formula)
-    remaining_formulae.each do |dependent|
-      required = dependent.missing_dependencies(hide: keg_names)
-      required.select! do |f|
-        kegs_by_name.key?(f)
-      end
-      next unless required.any?
-
-      required_kegs = required.map { |f| kegs_by_name[f].sort_by(&:version).last }
-      return required_kegs, [dependent]
-    end
-
-    nil
-  end
-
   def rm_pin(rack)
     Formulary.from_rack(rack).unpin
   rescue