dependency cleanup

Gemfile

@@ -8,12 +8,7 @@ source "https://rubygems.org"
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
 gem "jekyll", "~> 4.3.2"
-# This is the default theme for new Jekyll sites. You may change this to anything you like.
-gem "minima", "~> 2.5"
-# If you want to use GitHub Pages, remove the "gem "jekyll"" above and
-# uncomment the line below. To upgrade, run `bundle update github-pages`.
-# gem "github-pages", group: :jekyll_plugins
-# If you have any plugins, put them here!
+
 group :jekyll_plugins do
   gem "jekyll-sitemap"
   gem "jekyll-seo-tag"

Gemfile.lock

@@ -33,8 +33,6 @@ GEM
       safe_yaml (~> 1.0)
       terminal-table (>= 1.8, < 4.0)
       webrick (~> 1.7)
-    jekyll-feed (0.17.0)
-      jekyll (>= 3.7, < 5.0)
     jekyll-sass-converter (3.0.0)
       sass-embedded (~> 1.54)
     jekyll-seo-tag (2.8.0)
@@ -52,10 +50,6 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
-    minima (2.5.1)
-      jekyll (>= 3.5, < 5.0)
-      jekyll-feed (~> 0.9)
-      jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (5.0.4)
@@ -88,7 +82,6 @@ DEPENDENCIES
   jekyll (~> 4.3.2)
   jekyll-seo-tag
   jekyll-sitemap
-  minima (~> 2.5)
   tzinfo (>= 1, < 3)
   tzinfo-data
   wdm (~> 0.1.1)