Disable/Hide Recently Ordered Block in Magento 2
To hide the recently ordered product block from the left side
Create default.xml in your module or theme's view/layout folder and paste the below code.
<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<referenceBlock name="sale.reorder.sidebar" remove="true"/>
</body>
</page>