diff --git a/lib/rubocop.rb b/lib/rubocop.rb
index 7809089beec..60717410ba9 100644
--- a/lib/rubocop.rb
+++ b/lib/rubocop.rb
@@ -586,7 +586,6 @@
 # relies on simple text
 require_relative 'rubocop/formatter/clang_style_formatter'
 require_relative 'rubocop/formatter/disabled_config_formatter'
-require_relative 'rubocop/formatter/disabled_lines_formatter'
 require_relative 'rubocop/formatter/emacs_style_formatter'
 require_relative 'rubocop/formatter/file_list_formatter'
 require_relative 'rubocop/formatter/fuubar_style_formatter'
diff --git a/lib/rubocop/formatter/disabled_lines_formatter.rb b/lib/rubocop/formatter/disabled_lines_formatter.rb
deleted file mode 100644
index 5e9e0017247..00000000000
--- a/lib/rubocop/formatter/disabled_lines_formatter.rb
+++ /dev/null
@@ -1,57 +0,0 @@
-# frozen_string_literal: true
-
-module RuboCop
-  module Formatter
-    # A basic formatter that displays the lines disabled
-    # inline comments.
-    class DisabledLinesFormatter < BaseFormatter
-      include PathUtil
-      include Colorizable
-
-      attr_reader :cop_disabled_line_ranges
-
-      def started(_target_files)
-        @cop_disabled_line_ranges = {}
-      end
-
-      def file_started(file, options)
-        return unless options[:cop_disabled_line_ranges]
-
-        @cop_disabled_line_ranges[file] =
-          options[:cop_disabled_line_ranges]
-      end
-
-      def finished(_inspected_files)
-        cops_disabled_in_comments_summary
-      end
-
-      private
-
-      def cops_disabled_in_comments_summary
-        summary = "\nCops disabled line ranges:\n\n"
-
-        @cop_disabled_line_ranges.each do |file, disabled_cops|
-          disabled_cops.each do |cop, line_ranges|
-            line_ranges.each do |line_range|
-              file = cyan(smart_path(file))
-              summary += "#{file}:#{line_range}: #{cop}\n"
-            end
-          end
-        end
-
-        output.puts summary
-      end
-
-      def smart_path(path)
-        # Ideally, we calculate this relative to the project root.
-        base_dir = Dir.pwd
-
-        if path.start_with? base_dir
-          relative_path(path, base_dir)
-        else
-          path
-        end
-      end
-    end
-  end
-end
diff --git a/lib/rubocop/formatter/formatter_set.rb b/lib/rubocop/formatter/formatter_set.rb
index 08e83de3357..f85bf17acd3 100644
--- a/lib/rubocop/formatter/formatter_set.rb
+++ b/lib/rubocop/formatter/formatter_set.rb
@@ -11,7 +11,6 @@ class FormatterSet < Array
       BUILTIN_FORMATTERS_FOR_KEYS = {
         '[a]utogenconf' => AutoGenConfigFormatter,
         '[c]lang'       => ClangStyleFormatter,
-        '[d]isabled'    => DisabledLinesFormatter,
         '[e]macs'       => EmacsStyleFormatter,
         '[fi]les'       => FileListFormatter,
         '[fu]ubar'      => FuubarStyleFormatter,
diff --git a/spec/rubocop/formatter/disabled_lines_formatter_spec.rb b/spec/rubocop/formatter/disabled_lines_formatter_spec.rb
deleted file mode 100644
index d10c01c3349..00000000000
--- a/spec/rubocop/formatter/disabled_lines_formatter_spec.rb
+++ /dev/null
@@ -1,83 +0,0 @@
-# frozen_string_literal: true
-
-RSpec.describe RuboCop::Formatter::DisabledLinesFormatter do
-  subject(:formatter) { described_class.new(output) }
-
-  let(:output) { StringIO.new }
-
-  let(:files) do
-    %w[lib/rubocop.rb spec/spec_helper.rb exe/rubocop].map do |path|
-      File.expand_path(path)
-    end
-  end
-
-  let(:file_started) do
-    formatter.file_started(files.first, cop_disabled_line_ranges)
-  end
-
-  describe '#file_started' do
-    before { formatter.started(files) }
-
-    context 'when no disable cop comments are detected' do
-      let(:cop_disabled_line_ranges) { {} }
-
-      it 'does not add to cop_disabled_line_ranges' do
-        expect { file_started }.not_to(
-          change(formatter, :cop_disabled_line_ranges)
-        )
-      end
-    end
-
-    context 'when any disable cop comments are detected' do
-      let(:cop_disabled_line_ranges) do
-        { cop_disabled_line_ranges: { 'LineLength' => [1..1] } }
-      end
-
-      it 'merges the changes into cop_disabled_line_ranges' do
-        expect { file_started }.to(
-          change(formatter, :cop_disabled_line_ranges)
-        )
-      end
-    end
-  end
-
-  describe '#finished' do
-    context 'when there disabled cops detected' do
-      let(:cop_disabled_line_ranges) do
-        {
-          cop_disabled_line_ranges: {
-            'LineLength' => [1..1],
-            'ClassLength' => [1..Float::INFINITY]
-          }
-        }
-      end
-      let(:offenses) do
-        [
-          RuboCop::Cop::Offense.new(:convention, location, 'Class too long.',
-                                    'ClassLength', :disabled),
-          RuboCop::Cop::Offense.new(:convention, location, 'Line too long.',
-                                    'LineLength', :uncorrected)
-        ]
-      end
-      let(:location) { OpenStruct.new(line: 3) }
-
-      before do
-        formatter.started(files)
-        formatter.file_started('lib/rubocop.rb', cop_disabled_line_ranges)
-        formatter.file_finished('lib/rubocop.rb', offenses)
-      end
-
-      it 'lists disabled cops by file' do
-        formatter.finished(files)
-        expect(output.string)
-          .to eq(<<~OUTPUT)
-
-            Cops disabled line ranges:
-
-            lib/rubocop.rb:1..1: LineLength
-            lib/rubocop.rb:1..Infinity: ClassLength
-          OUTPUT
-      end
-    end
-  end
-end
diff --git a/spec/rubocop/options_spec.rb b/spec/rubocop/options_spec.rb
index 505367cf633..04f96de1da5 100644
--- a/spec/rubocop/options_spec.rb
+++ b/spec/rubocop/options_spec.rb
@@ -71,7 +71,6 @@ def abs(path)
                                                [p]rogress is used by default
                                                  [a]utogenconf
                                                  [c]lang
-                                                 [d]isabled
                                                  [e]macs
                                                  [fi]les
                                                  [fu]ubar