Remove karma/jasmine JS tests, and all infrastructure

These are not working and have not been working for some time -- unclear how long. There was only one very simple/unclear-value test in there anyway.

Remove the whole karma/jasmine infrastructure, as it wasn't working, we don't currently have the capaccity to get it working, and it's one more moving part to go wrong.

.circleci/config.yml

@@ -44,10 +44,6 @@ jobs:
 
       - samvera/rubocop
 
-      - run:
-          name: Install Karma for JavaScript and functional tests
-          command: sudo npm install -g karma karma-jasmine karma-chrome-launcher
-
       - samvera/parallel_rspec
 
 workflows:

.rubocop_todo.yml

@@ -31,11 +31,6 @@ Metrics/MethodLength:
 Metrics/ParameterLists:
   Max: 7
 
-# Offense count: 1
-RSpec/DescribeClass:
-  Exclude:
-    - 'spec/javascripts/jasmine_spec.rb'
-
 # Offense count: 2
 RSpec/MultipleExpectations:
   Max: 2

README.md

@@ -105,8 +105,6 @@ However, we also recommend merging the contents of this file into your main `app
 ## Testing
 This is a Rails Engine which is tested using the [engine_cart](https://github.com/cbeer/engine_cart) Gem and rspec.
 
-One rspec test invokes [karma](https://karma-runner.github.io/latest/index.html) to run Javascript tests. For this test to succeed, you need to install karma on your system, first by making sure `npm` is installed, and then run `npm install -g karma karma-jasmine karma-chrome-launcher`.
-
 Test suites may be executed with the following invocation:
 
 ```bash

browse-everything.gemspec

@@ -35,7 +35,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'coveralls'
   spec.add_development_dependency 'engine_cart', '~> 2.2'
   spec.add_development_dependency 'factory_bot_rails'
-  spec.add_development_dependency 'jasmine', '~> 2.3'
   spec.add_development_dependency 'pry-byebug'
   spec.add_development_dependency 'rails-controller-testing'
   spec.add_development_dependency 'rake'