active_support/deprecation has to be already required via active_support/rails.rb

actionview/lib/action_view/base.rb

@@ -3,7 +3,6 @@
 require "active_support/core_ext/module/attr_internal"
 require "active_support/core_ext/module/attribute_accessors"
 require "active_support/ordered_options"
-require "active_support/deprecation"
 require "action_view/log_subscriber"
 require "action_view/helpers"
 require "action_view/context"

actionview/lib/action_view/lookup_context.rb

@@ -3,7 +3,6 @@
 require "concurrent/map"
 require "active_support/core_ext/module/remove_method"
 require "active_support/core_ext/module/attribute_accessors"
-require "active_support/deprecation"
 require "action_view/template/resolver"
 
 module ActionView

actionview/lib/action_view/template.rb

@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require "active_support/core_ext/kernel/singleton_class"
-require "active_support/deprecation"
 require "thread"
 require "delegate"
 

actionview/lib/action_view/template/handlers.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "active_support/deprecation"
-
 module ActionView #:nodoc:
   # = Action View Template Handlers
   class Template #:nodoc:

actionview/lib/action_view/template/html.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "active_support/deprecation"
-
 module ActionView #:nodoc:
   # = Action View HTML Template
   class Template #:nodoc:

activemodel/lib/active_model/errors.rb

@@ -4,7 +4,6 @@ require "active_support/core_ext/array/conversions"
 require "active_support/core_ext/string/inflections"
 require "active_support/core_ext/object/deep_dup"
 require "active_support/core_ext/string/filters"
-require "active_support/deprecation"
 require "active_model/error"
 require "active_model/nested_error"
 require "forwardable"

activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb

@@ -1,7 +1,5 @@
 # frozen_string_literal: true
 
-require "active_support/deprecation"
-
 module ActiveRecord
   module ConnectionAdapters # :nodoc:
     module DatabaseLimits

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -2,7 +2,6 @@
 
 require "active_record/migration/join_table"
 require "active_support/core_ext/string/access"
-require "active_support/deprecation"
 require "digest/sha2"
 
 module ActiveRecord

activerecord/lib/active_record/connection_adapters/abstract_adapter.rb

@@ -6,7 +6,6 @@ require "active_record/connection_adapters/sql_type_metadata"
 require "active_record/connection_adapters/abstract/schema_dumper"
 require "active_record/connection_adapters/abstract/schema_creation"
 require "active_support/concurrency/load_interlock_aware_monitor"
-require "active_support/deprecation"
 require "arel/collectors/bind"
 require "arel/collectors/composite"
 require "arel/collectors/sql_string"