refactor(skylight): Removes Skylight (#249)

* refactor(skylight): Removes Skylight

* refactor(docs): Removes Skylight documentation

Author: cbaudouinjr

Gemfile

@@ -85,7 +85,6 @@ gem 'simple_spark'
 gem 'sparkpost_rails'
 gem 'httparty'
 gem 'rollbar', '~> 2.8'
-gem 'skylight'
 gem 'rubyzip', '>= 1.3.0'
 gem 'rails_12factor', group: :production
 

Gemfile.lock

@@ -379,10 +379,6 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.2)
-    skylight (4.3.0)
-      skylight-core (= 4.3.0)
-    skylight-core (4.3.0)
-      activesupport (>= 4.2.0)
     sparkpost_rails (1.5.2)
       rails (>= 4.0, < 6.1)
     spring (2.1.0)
@@ -492,7 +488,6 @@ DEPENDENCIES
   simple_form
   simple_spark
   simplecov
-  skylight
   sparkpost_rails
   spring
   spring-watcher-listen (~> 2.0.0)

docs/deployment-environment-variables.md

@@ -125,11 +125,3 @@ By default, charts & timestamps will be in UTC.
 ```bash
 TIME_ZONE="America/Los_Angeles"
 ```
-
-### Skylight
-
-Skylight provides detailed performance analytics for the app, if you chose to use it.
-
-```bash
-SKYLIGHT_AUTHENTICATION=""
-```