Remove Codecov

We're still getting build errors related to CodeCov reports not being uploaded

.simplecov

@@ -15,8 +15,3 @@ SimpleCov.start 'rails' do
   add_filter '/db'
   add_filter '/lib/tasks/sample_data/'
 end
-
-if ENV['CI']
-  require 'codecov'
-  SimpleCov.formatter = SimpleCov::Formatter::Codecov
-end

Gemfile

@@ -156,7 +156,6 @@ end
 
 group :test do
   gem 'byebug'
-  gem 'codecov', require: false
   gem 'pdf-reader'
   gem 'rails-controller-testing'
   gem 'simplecov', require: false

Gemfile.lock

@@ -190,8 +190,6 @@ GEM
     cliver (0.3.2)
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
-    codecov (0.6.0)
-      simplecov (>= 0.15, < 0.22)
     coderay (1.1.3)
     coffee-rails (5.0.0)
       coffee-script (>= 2.2.0)
@@ -706,7 +704,6 @@ DEPENDENCIES
   cancancan (~> 1.15.0)
   capybara
   catalog!
-  codecov
   coffee-rails (~> 5.0.0)
   combine_pdf
   compass-rails

README.md

@@ -1,5 +1,4 @@
 [![Build](https://github.com/openfoodfoundation/openfoodnetwork/actions/workflows/build.yml/badge.svg)](https://github.com/openfoodfoundation/openfoodnetwork/actions/workflows/build.yml)
-[![codecov](https://codecov.io/gh/openfoodfoundation/openfoodnetwork/branch/master/graph/badge.svg?token=FBSOod4qiu)](https://codecov.io/gh/openfoodfoundation/openfoodnetwork)
 [![Code Climate](https://codeclimate.com/github/openfoodfoundation/openfoodnetwork.png)](https://codeclimate.com/github/openfoodfoundation/openfoodnetwork)
 
 # Open Food Network