diff --git a/lib/tasks/haml-lint.rake b/lib/tasks/haml-lint.rake
deleted file mode 100644
index 609dfaa48e..0000000000
--- a/lib/tasks/haml-lint.rake
+++ /dev/null
@@ -1,5 +0,0 @@
-unless Rails.env.production?
-  require 'haml_lint/rake_task'
-
-  HamlLint::RakeTask.new
-end
diff --git a/lib/tasks/rubocop.rake b/lib/tasks/rubocop.rake
deleted file mode 100644
index 78ffccc9d0..0000000000
--- a/lib/tasks/rubocop.rake
+++ /dev/null
@@ -1,5 +0,0 @@
-unless Rails.env.production?
-  require 'rubocop/rake_task'
-
-  RuboCop::RakeTask.new
-end
diff --git a/lib/tasks/scss-lint.rake b/lib/tasks/scss-lint.rake
deleted file mode 100644
index 250fd8699e..0000000000
--- a/lib/tasks/scss-lint.rake
+++ /dev/null
@@ -1,10 +0,0 @@
-unless Rails.env.production?
-  require 'scss_lint/rake_task'
-
-  SCSSLint::RakeTask.new do |t|
-    t.config = '.scss-lint.yml'
-    # See https://github.com/brigade/scss-lint/issues/726
-    # Hack, otherwise linter won't respect scss_files option in config file.
-    t.files = []
-  end
-end