SQL backstage update

Since Aurora only has one SQL database, I've removed the old database
proc and object (dbcon_old). It'll make everything connect to the same
database, and be less of a hassle with the config files.

code/controllers/configuration.dm

@@ -608,12 +608,6 @@
 				sqllogin = value
 			if ("password")
 				sqlpass = value
-			if ("feedback_database")
-				sqlfdbkdb = value
-			if ("feedback_login")
-				sqlfdbklogin = value
-			if ("feedback_password")
-				sqlfdbkpass = value
 			if ("enable_stat_tracking")
 				sqllogging = 1
 			else