HCK-14316: RE from instance (#76)

<!--do not remove this marker, its needed to replace info when ticket
title is updated -->
<!--jira-description-action-hidden-marker-start-->

<table>
<td>
<a href="https://hackolade.atlassian.net/browse/HCK-14316"
title="HCK-14316" target="_blank"><img alt="Bug"
src="https://hackolade.atlassian.net/rest/api/2/universal_avatar/view/type/issuetype/avatar/10303?size=medium"
/>HCK-14316</a> [DB2][RE] Columns aren't REed from DB2 instance
  </td></table>
  <br />
 

<!--jira-description-action-hidden-marker-end-->
## Content

* removed redundant escape, not needed anymore after moving from cli
args to stdin approach

Author: chulanovskyi-bs

shared/helpers/queryHelper.js

@@ -77,7 +77,7 @@ const getTableNamesQuery = ({ tableType, includeSystemCollection }) => {
 const getGenerateTableDdlQuery = ({ schemaName, tableName, tableType }) => {
 	const tableArgument = tableType === TABLE_TYPE.table ? '-t' : '-v';
 
-	return `CALL SYSPROC.DB2LK_GENERATE_DDL('-a -e -z ""${schemaName}"" ${tableArgument} ""${tableName}""', ?);`;
+	return `CALL SYSPROC.DB2LK_GENERATE_DDL('-a -e -z "${schemaName}" ${tableArgument} "${tableName}"', ?);`;
 };
 
 /**