unregister(symbol)
This method is opposite of register method.
To unregister a MIME type:
Mime::Type.unregister(:mobile)
# File actionpack/lib/action_dispatch/http/mime_type.rb, line 238 def unregister(symbol) symbol = symbol.downcase if mime = Mime[symbol] SET.delete_if { |v| v.eql?(mime) } LOOKUP.delete_if { |_, v| v.eql?(mime) } EXTENSION_LOOKUP.delete_if { |_, v| v.eql?(mime) } end end