diff --git a/app/inputs/array_input.rb b/app/inputs/array_input.rb
deleted file mode 100644
index e08b96709de..00000000000
--- a/app/inputs/array_input.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-class ArrayInput < SimpleForm::Inputs::StringInput
-  # simple_form throws a deprecation warning noting that the
-  # method signature should be changed to add this parameter
-  def input(_wrapper_options)
-    input_html_options[:type] ||= input_type
-
-    existing_values = Array(object.public_send(attribute_name)).map do
-      build
-    end
-
-    existing_values.push(build) if existing_values.empty?
-
-    safe_join(existing_values)
-  end
-
-  def input_type
-    :text
-  end
-
-  def build
-    options = {
-      value: nil,
-      class: 'block col-12 field',
-      autocomplete: 'off',
-      name: "#{object_name}[#{attribute_name}][]",
-    }
-
-    builder.text_field(nil, input_html_options.merge(options))
-  end
-
-  def builder
-    @builder ||= :builder
-  end
-end