Remove therubyracer from the Gemfile

Gemfile

@@ -37,7 +37,6 @@ gem 'jbuilder', '~> 2.5'
 
 gem 'haml'
 
-gem "therubyracer"
 gem 'bootstrap', '~> 4.0.0.alpha6'
 
 gem 'jquery-ui-rails'

Gemfile.lock

@@ -100,7 +100,6 @@ GEM
     jwt (1.5.6)
     launchy (2.5.0)
       addressable (~> 2.7)
-    libv8 (3.16.14.19)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -166,7 +165,6 @@ GEM
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    ref (2.0.0)
     regexp_parser (2.1.1)
     responders (3.0.1)
       actionpack (>= 5.0)
@@ -216,9 +214,6 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     temple (0.8.2)
-    therubyracer (0.12.3)
-      libv8 (~> 3.16.14.15)
-      ref
     thor (1.1.0)
     thread_safe (0.3.6)
     tilt (2.0.10)
@@ -277,7 +272,6 @@ DEPENDENCIES
   seed_dump
   spring
   spring-watcher-listen (~> 2.0.0)
-  therubyracer
   timecop
   turbolinks (~> 5)
   twilio-ruby (~> 4.11.1)