Fix #2

Added uninstall.php to fix the same.

The records will be deleted if the Lite plugin is not installed.

price-by-user-role-for-woocommerce/uninstall.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * Price by User Roles for WooCommerce - Lite
+ *
+ * Uninstalling Price by User Roles for WooCommerce Plugin delete settings.
+ *
+ * @author      Tyche Softwares
+ * @category    Core
+ * @version     1.0
+ * @since 		1.3
+ */
+
+if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
+	exit;
+}
+
+// check if the Pro version file is present. If yes, do not delete any settings irrespective of whether the plugin is active or no.
+if( file_exists( WP_PLUGIN_DIR . '/price-by-user-role-for-woocommerce-pro/price-by-user-role-for-woocommerce-pro.php' ) ) {
+	return;
+}
+
+require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
+
+global $wpdb;
+/**
+ * Delete the data for the WordPress Multisite.
+ */
+if ( is_multisite() ) {
+
+	$pbur_blog_list = get_sites();
+
+    foreach( $pbur_blog_list as $pbur_blog_list_key => $pbur_blog_list_value ) {
+
+
+    	$pbur_blog_id = $pbur_blog_list_value->blog_id;
+
+    	/**
+    	 * It indicates the sub site id.
+    	 */
+    	$pbur_multisite_prefix = $pbur_blog_id > 1 ? $wpdb->prefix . "$pbur_blog_id_" : $wpdb->prefix;
+
+
+		// Product Settings
+		$wpdb->query( "DELETE FROM `" . $pbur_multisite_prefix . "postmeta` WHERE meta_key LIKE '_alg_wc_price_by_user_role_%'" );
+
+		// General Settings
+		$wpdb->query( "DELETE FROM `" . $pbur_multisite_prefix . "options` WHERE option_name LIKE 'alg_wc_price_by_user_role_%'" );
+
+		// Version Number
+		delete_blog_option( $pbur_blog_id, 'alg_wc_price_by_user_role_version' );    	
+
+	}
+} else { 
+
+	// Product Settings
+	$wpdb->query( "DELETE FROM `" . $wpdb->prefix . "postmeta` WHERE meta_key LIKE '_alg_wc_price_by_user_role_%'" );
+
+	// General Settings
+	$wpdb->query( "DELETE FROM `" . $wpdb->prefix . "options` WHERE option_name LIKE 'alg_wc_price_by_user_role_%'" );
+
+	// Version Number
+	delete_option( 'alg_wc_price_by_user_role_version' );
+
+}
+// Clear any cached data that has been removed
+wp_cache_flush();
+
+?>