Rails Ruby on Rails

I am trying to create a rails website without using database. So, i remove the active_record framework from environment.rb:

config.frameworks -= [ :active_record ]

Then, I encounter this problem if I run my server under development mode:

/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:278:in `load_missing_constant': uninitialized constant ActiveRecord (NameError)
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:467:in `const_missing'
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:479:in `const_missing'
	from /Users/macbookpro/documents/Projects/reddit/config/initializers/new_rails_defaults.rb:5
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:502:in `load'
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:502:in `load'
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in `new_constants_in'
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:502:in `load'
	from /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:475:in `load_application_initializers'
	from /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:474:in `each'
	from /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:474:in `load_application_initializers'
	from /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:145:in `process'
	from /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:93:in `send'
	from /usr/local/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/initializer.rb:93:in `run'
	from /Users/macbookpro/documents/Projects/reddit/public/../config/environment.rb:13
	from /Users/macbookpro/documents/Projects/reddit/public/dispatch.fcgi:21:in `require'
	from /Users/macbookpro/documents/Projects/reddit/public/dispatch.fcgi:21

Then, I found that the problem is actually caused by the new added initializer file called new_rails_defaults.rb:

# These settings change the behavior of Rails 2 apps and will be defaults
# for Rails 3. You can remove this initializer when Rails 3 is released.

# Include Active Record class name as root for JSON serialized output.
# ActiveRecord::Base.include_root_in_json = true

# Store the full class name (including module namespace) in STI type column.
# ActiveRecord::Base.store_full_sti_class = true

# Use ISO 8601 format for JSON serialized times and dates.
ActiveSupport.use_standard_json_time_format = true

# Don't escape HTML entities in JSON, leave that for the #json_escape helper.
# if you're including raw json in an HTML page.
ActiveSupport.escape_html_entities_in_json = false

So, after I commented up the ActiveRecord command. Everything seems alright! I am not sure that whether this will cause some other problems or not.