audit: Add a global flag to silent warning when auditing

Library/Homebrew/dev-cmd/audit.rb

@@ -54,6 +54,7 @@ module Homebrew
 
   def audit
     Homebrew.inject_dump_stats!(FormulaAuditor, /^audit_/) if ARGV.switch? "D"
+    Homebrew.auditing = true
 
     formula_count = 0
     problem_count = 0

Library/Homebrew/global.rb

@@ -45,11 +45,15 @@ module Homebrew
       @failed == true
     end
 
-    attr_writer :raise_deprecation_exceptions
+    attr_writer :raise_deprecation_exceptions, :auditing
 
     def raise_deprecation_exceptions?
       @raise_deprecation_exceptions == true
     end
+
+    def auditing?
+      @auditing == true
+    end
   end
 end
 

Library/Homebrew/utils.rb

@@ -102,7 +102,7 @@ def odeprecated(method, replacement = nil, disable: false, disable_on: nil, call
   if ARGV.homebrew_developer? || disable ||
      Homebrew.raise_deprecation_exceptions?
     raise MethodDeprecatedError, message
-  else
+  elsif !Homebrew.auditing?
     opoo "#{message}\n"
   end
 end