Remove redundant Railtie (Shopify#535)

* Remove redundant Railtie

* Remove list of supported features (now covered in jekyll docs)

Author: andyw8

lib/ruby-lsp-rails.rb

@@ -2,15 +2,3 @@
 # frozen_string_literal: true
 
 require "ruby_lsp_rails/version"
-require "ruby_lsp_rails/railtie"
-
-module RubyLsp
-  # # Supported features
-  #
-  # - [Hover](rdoc-ref:RubyLsp::Rails::Hover)
-  # - [CodeLens](rdoc-ref:RubyLsp::Rails::CodeLens)
-  # - [DocumentSymbol](rdoc-ref:RubyLsp::Rails::DocumentSymbol)
-  # - [Definition](rdoc-ref:RubyLsp::Rails::Definition)
-  module Rails
-  end
-end