Unfave script, because why not??

unfave.rb

#!/usr/bin/env ruby
require "rubygems"
require "twitter"
require "json"
require "faraday"

# things you must configure
TWITTER_USER = "your_username"

# get these from dev.twitter.com
# (you can reuse the keys from langoliers.rb)
CONSUMER_KEY = "your_consumer_key"
CONSUMER_SECRET = "your_consumer_secret"
OAUTH_TOKEN = "your_oauth_token"
OAUTH_TOKEN_SECRET = "your_oauth_secret"

### you shouldn't have to change anything below this line ###

client = Twitter::REST::Client.new do |config|
  config.consumer_key        = CONSUMER_KEY
  config.consumer_secret     = CONSUMER_SECRET
  config.access_token        = OAUTH_TOKEN
  config.access_token_secret = OAUTH_TOKEN_SECRET
end

faves = []
oldest_fave_id = 9000000000000000000
got_faves = true

puts ""
puts "First we collect your faves ✨"

while got_faves do
  begin
    new_faves = client.favorites(TWITTER_USER,{:count => 200, :max_id => oldest_fave_id})

    if (new_faves.length > 0) then
      oldest_fave_id = new_faves.last.id - 1 # the - 1 is important, because of course it is
      faves += new_faves
      puts "Got more faves, including tweet #{new_faves.last.id}..."
    else
      puts "No more faves to get!"
      got_faves = false
    end

  rescue Twitter::Error::TooManyRequests => e
    puts "Hit the rate limit. Pausing for #{e.rate_limit.reset_in} seconds..."
    sleep e.rate_limit.reset_in
    retry

  rescue StandardError => e
    puts e.inspect
    exit
  end
end

puts ""
puts "The great unfaving begins 🙅"

faves.each do |fave|
  puts "Unfavoriting tweet #{fave.id}..."
  begin
    client.unfavorite(fave.id)

  rescue Twitter::Error::TooManyRequests => e
    puts "Hit the rate limit. Pausing for #{e.rate_limit.reset_in} seconds..."
    sleep e.rate_limit.reset_in
    retry

  rescue StandardError => e
    puts e.inspect
    exit
  end
end

puts ""
puts "Done! 🙌"
puts ""