No need to recommend spring any more as a common option

Author: dhh

railties/lib/rails/generators/rails/app/templates/Gemfile.tt

@@ -56,8 +56,6 @@ group :development do
   # gem "rack-mini-profiler"
 
 <%- end -%>
-  # Speed up commands on slow machines / big apps [https://github.com/rails/spring]
-  # gem "spring"
 <%- if RUBY_VERSION < "3.2" -%>
 
   # Highlight the fine-grained location where an error occurred [https://github.com/ruby/error_highlight]