Revert "HCK-8971: include schema name in index name of DDL (#125)" (#126)

This reverts commit 1fb2d7c.

Author: Nightlngale

forward_engineering/ddlProvider/ddlProvider.js

@@ -326,7 +326,7 @@ module.exports = (baseProvider, options, app) => {
 		 * */
 		createIndex(tableName, index, dbData, isParentActivated = true) {
 			const isUnique = index.unique && index.index_method === 'btree';
-			const name = getNamePrefixedWithSchemaName(index.indxName, index.schemaName);
+			const name = wrapInQuotes(index.indxName);
 			const unique = isUnique ? ' UNIQUE' : '';
 			const concurrently = index.concurrently ? ' CONCURRENTLY' : '';
 			const ifNotExist = index.ifNotExist ? ' IF NOT EXISTS' : '';