1 files changed, 5 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
index 92ac607a3c..fe00f9d750 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
@@ -2,7 +2,6 @@ require 'date'
 require 'set'
 require 'bigdecimal'
 require 'bigdecimal/util'
-require 'active_support/core_ext/string/strip'
 
 module ActiveRecord
   module ConnectionAdapters #:nodoc:
@@ -61,12 +60,11 @@ module ActiveRecord
       def emit_warning_if_null_unspecified(options)
         return if options.key?(:null)
 
-        ActiveSupport::Deprecation.warn(<<-MESSAGE.strip_heredoc)
-        `timestamp` was called without specifying an option for `null`. In Rails
-        5.0, this behavior will change to `null: false`. You should manually
-        specify `null: true` to prevent the behavior of your existing migrations
-        from changing.
-        MESSAGE
+        ActiveSupport::Deprecation.warn \
+          "`timestamp` was called without specifying an option for `null`. In Rails " \
+          "5.0, this behavior will change to `null: false`. You should manually " \
+          "specify `null: true` to prevent the behavior of your existing migrations " \
+          "from changing."
       end
     end
 
@@ -327,7 +325,6 @@ module ActiveRecord
         end
 
         column.limit       = limit
-        column.array       = options[:array] if column.respond_to?(:array)
         column.precision   = options[:precision]
         column.scale       = options[:scale]
         column.default     = options[:default]