Drop IE specific favicon support

Gemfile

@@ -130,9 +130,6 @@ gem "ffi-libarchive"
 gem "gd2-ffij", ">= 0.4.0"
 gem "marcel"
 
-# Used for browser detection
-gem "browser", "< 6" # for ruby 3.1 support
-
 # Used for S3 object storage
 gem "aws-sdk-s3"
 

Gemfile.lock

@@ -134,7 +134,6 @@ GEM
     brakeman (7.0.0)
       racc
     brotli (0.6.0)
-    browser (5.3.1)
     builder (3.3.0)
     bzip2-ffi (1.1.1)
       ffi (~> 1.0)
@@ -683,7 +682,6 @@ DEPENDENCIES
   bootstrap (~> 5.3.2)
   bootstrap_form (~> 5.0)
   brakeman
-  browser (< 6)
   bzip2-ffi
   cancancan
   canonical-rails

app/views/layouts/_meta.html.erb

@@ -1,4 +1,3 @@
-<%= favicon_link_tag "favicon.ico" if browser.ie? %>
 <% [57, 60, 72, 76, 114, 120, 144, 152, 180].each do |size| -%>
 <%= favicon_link_tag "apple-touch-icon-#{size}x#{size}.png", :rel => "apple-touch-icon", :sizes => "#{size}x#{size}", :type => "image/png" %>
 <% end -%>