Remove unnecessary gem.

Gemfile

@@ -10,7 +10,7 @@ gem 'sqlite3'
 # Use Puma as the app server
 gem 'puma', '~> 3.11'
 # Use SCSS for stylesheets
-gem 'sass-rails', '~> 5.0'
+# gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
 # See https://github.com/rails/execjs#readme for more supported runtimes

Gemfile.lock

@@ -168,17 +168,6 @@ GEM
     regexp_parser (2.8.1)
     rexml (3.2.6)
     rubyzip (2.3.2)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-    sass-rails (5.1.0)
-      railties (>= 5.2.0)
-      sass (~> 3.1)
-      sprockets (>= 2.8, < 4.0)
-      sprockets-rails (>= 2.0, < 4.0)
-      tilt (>= 1.1, < 3)
     selenium-webdriver (4.13.1)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
@@ -200,7 +189,6 @@ GEM
     sqlite3 (1.6.6)
       mini_portile2 (~> 2.8.0)
     thor (1.2.2)
-    tilt (2.3.0)
     timeout (0.4.0)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
@@ -237,7 +225,6 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   puma (~> 3.11)
   rails (~> 6.1, >= 6.1.7.4)
-  sass-rails (~> 5.0)
   selenium-webdriver (~> 4.13, >= 4.13.1)
   simple_form
   spring (~> 4.1, >= 4.1.1)