Fixes scroll of datasource modal (ToolJet#1804)

Author: gondar00

frontend/src/Editor/DataSourceManager/DataSourceManager.jsx

@@ -174,7 +174,6 @@ class DataSourceManager extends React.Component {
           show={this.props.showDataSourceManagerModal}
           size={selectedDataSource ? 'lg' : 'xl'}
           onEscapeKeyDown={this.hideModal}
-          className="mt-5"
           contentClassName={this.props.darkMode ? 'theme-dark' : ''}
           animation={false}
           onExit={this.onExit}