diff --git a/scrapy/conf/default_settings.py b/scrapy/conf/default_settings.py
index 829208a4b..70222f268 100644
--- a/scrapy/conf/default_settings.py
+++ b/scrapy/conf/default_settings.py
@@ -173,8 +173,6 @@ MEMUSAGE_NOTIFY_MAIL = []
 MEMUSAGE_REPORT = False
 MEMUSAGE_WARNING_MB = 0
 
-MYSQL_CONNECTION_SETTINGS = {}
-
 NEWSPIDER_MODULE = ''
 
 RANDOMIZE_DOWNLOAD_DELAY = True