Remove dead MySQL code

None of this code can be reached any more, so it can all be removed

1 files changed, 3 insertions, 10 deletions

diff --git a/lib/tasks/gitlab/db.rake b/lib/tasks/gitlab/db.rake
index 4e7a8adbef6..5f2ed5274e4 100644
--- a/lib/tasks/gitlab/db.rake
+++ b/lib/tasks/gitlab/db.rake
@@ -26,12 +26,9 @@ namespace :gitlab do
     task drop_tables: :environment do
       connection = ActiveRecord::Base.connection
 
-      # If MySQL, turn off foreign key checks
-      connection.execute('SET FOREIGN_KEY_CHECKS=0') if Gitlab::Database.mysql?
-
-      # connection.tables is deprecated in MySQLAdapter, but in PostgreSQLAdapter
-      # data_sources returns both views and tables, so use #tables instead
-      tables = Gitlab::Database.mysql? ? connection.data_sources : connection.tables
+      # In PostgreSQLAdapter, data_sources returns both views and tables, so use
+      # #tables instead
+      tables = connection.tables
 
       # Removes the entry from the array
       tables.delete 'schema_migrations'
@@ -40,12 +37,8 @@ namespace :gitlab do
 
       # Drop tables with cascade to avoid dependent table errors
       # PG: http://www.postgresql.org/docs/current/static/ddl-depend.html
-      # MySQL: http://dev.mysql.com/doc/refman/5.7/en/drop-table.html
       # Add `IF EXISTS` because cascade could have already deleted a table.
       tables.each { |t| connection.execute("DROP TABLE IF EXISTS #{connection.quote_table_name(t)} CASCADE") }
-
-      # If MySQL, re-enable foreign key checks
-      connection.execute('SET FOREIGN_KEY_CHECKS=1') if Gitlab::Database.mysql?
     end
 
     desc 'Configures the database by running migrate, or by loading the schema and seeding if needed'