Revert "Copy mod-eluna-lua-engine"

This reverts commit 882c07c3cf.

sql/README.md

@@ -1,24 +0,0 @@
-# BEST PRACTICES
-
-## Create a new table
-
-**Example:**
-```
-CREATE TABLE IF NOT EXISTS `table`(
-  `id` int(11) unsigned NOT NULL,
-  `active` BOOLEAN DEFAULT NULL,
-  PRIMARY KEY (`id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-```
-
-**Boolean datatype in mysql:**
-Use "TinyInt(1)"" or "Boolean" (this is the same thing)
-
-"bit(1)" can also work, but it may require a syntax like b'(0) and b'(1) when inserting (not sure).
-
-If there are multiple booleans in the same table, bit(1) is better, otherwise it's the same result.
-
-
-## Resources
-
-https://www.w3schools.com/sql/sql_datatypes.asp