Remove section about types of tests

doc/development/new_fe_guide/development/testing.md

@@ -267,20 +267,6 @@ expect(page).not_to have_selector('.card')
 
 ## Test helpers
 
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-> TODO: update the following sections
-
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-
-## Types of tests in our codebase
-
-* **RSpec**
-  * **[Ruby unit tests](#ruby-unit-tests-spec-rb)** for models, controllers, helpers, etc. (`/spec/**/*.rb`)
-  * **[Full feature tests](#full-feature-tests-spec-features-rb)** (`/spec/features/**/*.rb`)
-* **[Karma](#karma-tests-spec-javascripts-js)** (`/spec/javascripts/**/*.js`)
-* <s>Spinach</s> — These have been removed from our codebase in May 2018. (`/features/`)
-
 #### Vuex Helper: `testAction`
 
 We have a helper available to make testing actions easier, as per [official documentation](https://vuex.vuejs.org/en/testing.html):