Remove SQLite support

Gemfile

@@ -11,7 +11,6 @@ end
 gem "rails", "3.2.9"
 # Supported DBs
-gem "sqlite3", group: :sqlite
 gem "mysql2", group: :mysql
 gem "pg", group: :postgres

Gemfile.lock

@@ -410,7 +410,6 @@ GEM
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
-    sqlite3 (1.3.6)
     stamp (0.3.0)
     test_after_commit (0.0.1)
     therubyracer (0.10.2)
@@ -518,7 +517,6 @@ DEPENDENCIES
   simplecov
   six
   spinach-rails
-  sqlite3
   stamp
   test_after_commit
   therubyracer

config/database.yml.sqlite

-#
-# PRODUCTION
-#
-# SQLite version 3.x
-#   gem install sqlite3
-#
-#   Ensure the SQLite 3 gem is defined in your Gemfile
-#   gem 'sqlite3'
-production:
-  adapter: sqlite3
-  database: db/production.sqlite3
-  pool: 5
-  timeout: 5000
-
-#
-# Development specific
-#
-development:
-  adapter: sqlite3
-  database: db/development.sqlite3
-  pool: 5
-  timeout: 5000
-
-# Warning: The database defined as "test" will be erased and
-# re-generated from your development database when you run "rake".
-# Do not set this db to the same as development or production.
-test: &test
-  adapter: sqlite3
-  database: db/test.sqlite3
-  pool: 5
-  timeout: 5000

doc/install/databases.md

 # Databases:
-GitLab use mysql as default database but you are free to use PostgreSQL or SQLite.
-## SQLite
-
-    sudo apt-get install -y sqlite3 libsqlite3-dev 
-
+GitLab use MySQL as default database but you are free to use PostgreSQL.
 ## MySQL
     sudo apt-get install -y mysql-server mysql-client libmysqlclient-dev
@@ -47,9 +43,6 @@ GitLab use mysql as default database but you are free to use PostgreSQL or SQLit
 #### Select the database you want to use
-    # SQLite
-    sudo -u gitlab cp config/database.yml.sqlite config/database.yml
-
     # Mysql
     sudo -u gitlab cp config/database.yml.mysql config/database.yml
@@ -61,11 +54,7 @@ GitLab use mysql as default database but you are free to use PostgreSQL or SQLit
 #### Install gems 
     # mysql
-    sudo -u gitlab -H bundle install --without development test sqlite postgres  --deployment
+    sudo -u gitlab -H bundle install --without development test postgres  --deployment
     # or postgres
-    sudo -u gitlab -H bundle install --without development test sqlite mysql --deployment
-
-    # or sqlite
-    sudo -u gitlab -H bundle install --without development test mysql postgres  --deployment
-
+    sudo -u gitlab -H bundle install --without development test mysql --deployment

doc/install/installation.md

@@ -178,7 +178,7 @@ and ensure you have followed all of the above steps carefully.
     sudo gem install charlock_holmes --version '0.6.9'
     sudo gem install bundler
-    sudo -u gitlab -H bundle install --without development test sqlite postgres  --deployment
+    sudo -u gitlab -H bundle install --without development test postgres  --deployment
 #### Configure git client
@@ -269,7 +269,7 @@ You can login via web using admin generated with setup:
 # Advanced setup tips:
-_Checkout databases.md for postgres or sqlite_
+_Checkout databases.md for PostgreSQL_
 ## Customizing Resque's Redis connection