Disable FormulaCop

Library/.rubocop.yml

@@ -47,6 +47,11 @@ Cask/StanzaOrder:
   Description: "Ensure that cask stanzas are sorted correctly. More info at https://docs.brew.sh/Cask-Cookbook#stanza-order"
   Enabled: true
 
+# This was intended to be an abstract Cop class for Homebrew formulae, but rubocop doesn't know that.
+# TODO: refactor this as a module for formulae Cop classes to include instead
+FormulaCop:
+  Enabled: false
+
 # enable all formulae audits
 FormulaAudit:
   Enabled: true

Library/Homebrew/rubocops/extend/formula.rb

@@ -21,7 +21,6 @@ module RuboCop
         @file_path = processed_source.buffer.name
         return unless file_path_allowed?
         return unless formula_class?(node)
-        return unless respond_to?(:audit_formula)
 
         class_node, parent_class_node, @body = *node
         @formula_name = Pathname.new(@file_path).basename(".rb").to_s