Remove deprecated Coveralls gem

Gemfile

@@ -83,8 +83,6 @@ end
 
 # Test dependencies
 group :test do
-  gem "codeclimate-test-reporter", require: nil
-  gem "coveralls", require: false
   gem "rspec-rails"
   gem "webmock"
 end

Gemfile.lock

@@ -99,15 +99,7 @@ GEM
     chartkick (4.1.3)
     chunky_png (1.4.0)
     climate_control (0.2.0)
-    codeclimate-test-reporter (1.0.7)
-      simplecov
     concurrent-ruby (1.2.3)
-    coveralls (0.8.23)
-      json (>= 1.8, < 3)
-      simplecov (~> 0.16.1)
-      term-ansicolor (~> 1.3)
-      thor (>= 0.19.4, < 2.0)
-      tins (~> 1.6)
     crack (0.4.5)
       rexml
     crass (1.0.6)
@@ -124,7 +116,6 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.5.0)
-    docile (1.4.0)
     dotenv (2.8.1)
     dotenv-rails (2.8.1)
       dotenv (= 2.8.1)
@@ -332,11 +323,6 @@ GEM
     sentry-ruby (5.17.3)
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
-    simplecov (0.16.1)
-      docile (~> 1.1)
-      json (>= 1.8, < 3)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.2)
     spring (3.1.1)
     sprockets (4.0.3)
       concurrent-ruby (~> 1.0)
@@ -354,16 +340,10 @@ GEM
     stackprof (0.2.26)
     stringio (3.1.0)
     strscan (3.1.0)
-    sync (0.5.0)
-    term-ansicolor (1.8.0)
-      tins (~> 1.0)
     terrapin (0.6.0)
       climate_control (>= 0.0.3, < 1.0)
     thor (1.3.1)
     tilt (2.0.10)
-    tins (1.33.0)
-      bigdecimal
-      sync
     tqdm (0.3.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
@@ -406,8 +386,6 @@ DEPENDENCIES
   capistrano-rbenv (~> 2.2)
   capistrano-rvm (~> 0.1.2)
   chartkick (~> 4.0)
-  codeclimate-test-reporter
-  coveralls
   daemons (~> 1.4)
   delayed_job (~> 4.1)
   delayed_job_active_record

README.md

@@ -1,5 +1,5 @@
 # [Tap](https://zeus.ugent.be/tap)
-[![Code Climate](https://codeclimate.com/github/ZeusWPI/Tap/badges/gpa.svg)](https://codeclimate.com/github/ZeusWPI/Tap) [![Ruby](https://github.com/ZeusWPI/Tap/actions/workflows/ruby.yml/badge.svg)](https://github.com/ZeusWPI/Tap/actions/workflows/ruby.yml) [![Coverage Status](https://coveralls.io/repos/ZeusWPI/Tap/badge.svg?branch=master&service=github)](https://coveralls.io/github/ZeusWPI/Tap?branch=master)
+[![Code Climate](https://codeclimate.com/github/ZeusWPI/Tap/badges/gpa.svg)](https://codeclimate.com/github/ZeusWPI/Tap) [![Ruby](https://github.com/ZeusWPI/Tap/actions/workflows/ruby.yml/badge.svg)](https://github.com/ZeusWPI/Tap/actions/workflows/ruby.yml) 
 
 🍺 Yes. We have to drink. But we also have to pay. This is the drinking part.
 

spec/spec_helper.rb

@@ -1,8 +1,5 @@
 # frozen_string_literal: true
 
-require "coveralls"
-Coveralls.wear!
-
 # This file was generated by the `rails generate rspec:install` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
 # The generated `.rspec` file contains `--require spec_helper` which will cause