Remove old deps

Gemfile

@@ -5,10 +5,7 @@ source "https://rubygems.org"
 gem 'jekyll', '~> 4.2'
 
 group :jekyll_plugins do
-    gem 'jekyll-feed'
     gem 'jekyll-redirect-from'
-    gem 'jekyll_flexible_include'
-    # gem "kramdown-syntax-coderay", "~> 1.0"
     gem "jekyll-last-modified-at"
 end
 

_config.yml

@@ -30,17 +30,12 @@ kramdown:
       wrap: span
 
 
-flexible_include:
-  die_on_flexible_include_error: false
-
 include:
   - node_modules
 
+
 plugins:
-  # - jekyll-feed
   - jekyll-redirect-from
-  - flexible_include
-  # - kramdown-syntax-coderay
   - jekyll-last-modified-at