Only display the sold by if the product owner is a vendor

functions.php

<?php 
// Put this in your themes functions.php 

// Remove all existing actions and filters 
remove_action( 'woocommerce_after_shop_loop_item', 	array( 'WCV_Vendor_Shop', 'template_loop_sold_by'), 9, 2);
remove_filter( 'woocommerce_get_item_data', 		array( 'WCV_Vendor_Cart', 'sold_by' ), 10, 2 );
remove_action( 'woocommerce_product_meta_start', 	array( 'WCV_Vendor_Cart', 'sold_by_meta' ), 10, 2 );
remove_filter( 'woocommerce_order_product_title', 	array( 'WCV_Emails', 'show_vendor_in_email' ), 10, 2 );
remove_action( 'woocommerce_add_order_item_meta', 	array( 'WCV_Vendor_Shop', 'add_vendor_to_order_item_meta'), 10, 2 );
remove_action( 'woocommerce_after_shop_loop_item',  array( $wcvendors_pro->wcvendors_pro_store_controller, 'loop_sold_by' ), 8  );
remove_action( 'woocommerce_product_meta_start',  	array( $wcvendors_pro->wcvendors_pro_store_controller, 'product_sold_by' ), 8 );
remove_filter( 'woocommerce_get_item_data',  		array( $wcvendors_pro->wcvendors_pro_store_controller, 'cart_sold_by' ), 8, 2 );


// Hook into the product loop 
add_action( 'woocommerce_after_shop_loop_item', 'custom_loop_sold_by', 9 );
function custom_loop_sold_by($product_id) {
	
	$vendor_id = WCV_Vendors::get_vendor_from_product( $product_id );
	
	if ( WCV_Vendors::is_vendor( $vendor_id) ) { 
		
		$shop_url 	=  ''; 
		$store_id 	= WCVendors_Pro_Vendor_Controller::get_vendor_store_id( $vendor_id ); 

		$sold_by 		= apply_filters( 'wcv_loop_sold_by', 
			array( 
				'product_id'		=> $product_id, 
				'vendor_id'			=> $vendor_id, 
				'shop_url' 			=> get_the_permalink( $store_id ), 
				'shop_name'			=> WCV_Vendors::get_vendor_sold_by( $vendor_id ), 
				'wrapper_start'		=> '<small class="wcv_sold_by_in_loop">', 
				'wrapper_end'		=> '</small><br />', 
				'title'				=> __( 'Sold by: ', 'wcvendors-pro' )
			) 
		); 

		echo $sold_by[ 'wrapper_start' ]; 
		echo $sold_by[ 'title' ] .'<a href="'.$sold_by[ 'shop_url' ].'">'. $sold_by[ 'shop_name' ] .'</a>'; 
		echo $sold_by[ 'wrapper_end' ]; 
	}

} //custom_loop_sold_by() 

// Hook into the cart data 
add_filter( 'woocommerce_get_item_data', 'custom_cart_sold_by', 10, 2 );
function custom_cart_sold_by( $values, $cart_item ) {

	$vendor_id = $cart_item[ 'data' ]->post->post_author;

	if ( WCV_Vendors::is_vendor( $vendor_id ) ) { 

		$is_vendor 	= WCV_Vendors::is_vendor( $vendor_id ); 
		$store_id 	= $is_vendor ? WCVendors_Pro_Vendor_Controller::get_vendor_store_id( $vendor_id ) : 0; 
		$shop_url 	= ( $store_id 	!= 0 ) ? get_the_permalink( $store_id ) : ''; 
		$sold_by 	= ''; 

		if ( $is_vendor ) { 
			$sold_by = sprintf( '<a href="%s" target="_TOP">%s</a>', $shop_url, WCV_Vendors::get_vendor_sold_by( $vendor_id ) ); 
		} else { 
			$sold_by =  get_bloginfo( 'name' ); 
		}
		
		$values[] = array(
			'name' => apply_filters( 'wcv_cart_sold_by', __( 'Sold by', 'wcvendors-pro' ) ),
			'display' => $sold_by,
		);

		return $values; 
	}

	return $values;
} // custom_cart_sold_by() 

// Hook into the single product meta template 
add_action( 'woocommerce_product_meta_start', 'custom_product_sold_by_meta', 10, 2 );
function custom_product_sold_by_meta() {

	$vendor_id = get_the_author_meta( 'ID' );
	
	if ( WCV_Vendors::is_vendor( $vendor_id ) ) { 
		$shop_url 	=  ''; 
		$store_id 	= WCVendors_Pro_Vendor_Controller::get_vendor_store_id( $vendor_id ); 

		$sold_by 		=  array( 
				'vendor_id'			=> $vendor_id, 
				'shop_url' 			=> get_the_permalink( $store_id ), 
				'shop_name'			=> WCV_Vendors::get_vendor_sold_by( $vendor_id ), 
				'wrapper_start'		=> '<small class="wcv_sold_by_in_loop">', 
				'wrapper_end'		=> '</small><br />', 
				'title'				=> __( 'Sold by: ', 'wcvendors-pro' )
		); 

		echo $sold_by[ 'wrapper_start' ]; 
		echo $sold_by[ 'title' ] .'<a href="'.$sold_by[ 'shop_url' ].'">'. $sold_by[ 'shop_name' ] .'</a>'; 
		echo $sold_by[ 'wrapper_end' ]; 
	}
} // custom_product_sold_by_meta() 
?>