Fixed configs found during running 'rails server'

config/environments/mysql.rb

@@ -6,9 +6,6 @@ Railsgoat::Application.configure do
   # since you don't have to restart the web server when you make code changes.
   config.cache_classes = false
 
-  # Log error messages when you accidentally call methods on nil.
-  config.whiny_nils = true
-
   # Show full error reports and disable caching
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
@@ -22,10 +19,6 @@ Railsgoat::Application.configure do
   # Only use best-standards-support built into browsers
   config.action_dispatch.best_standards_support = :builtin
 
-  # Log the query plan for queries taking more than this (works
-  # with SQLite, MySQL, and PostgreSQL)
-  config.active_record.auto_explain_threshold_in_seconds = 0.5
-  
   # Tired of caching causing issues
   config.middleware.delete Rack::ETag