Uninstall mini_magick

I think this was probably part of the swf converters or something? Seems unused now though!

Gemfile

@@ -35,8 +35,6 @@ gem 'sanitize', '~> 2.0.3'
 
 gem 'neopets', '~> 0.2.0', :git => 'https://github.com/matchu/neopets.git'
 
-gem "mini_magick", "~> 3.4"
-
 gem "parallel", "~> 1.13.0"
 
 gem "http_accept_language", :git => "https://github.com/iain/http_accept_language.git"

Gemfile.lock

@@ -123,8 +123,6 @@ GEM
       mini_mime (>= 0.1.1)
     memcache-client (1.8.5)
     mime-types (1.25.1)
-    mini_magick (3.8.1)
-      subexec (~> 0.2.1)
     mini_mime (1.1.2)
     minitest (5.15.0)
     msgpack (0.5.12)
@@ -215,7 +213,6 @@ GEM
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
-    subexec (0.2.3)
     temple (0.8.2)
     thor (1.2.2)
     thread_safe (0.3.6)
@@ -250,7 +247,6 @@ DEPENDENCIES
   http_accept_language!
   letter_opener
   memcache-client (~> 1.8.5)
-  mini_magick (~> 3.4)
   msgpack (~> 0.5.3)
   mysql2 (>= 0.3.11)
   neopets (~> 0.2.0)!