Remove this.

functions.php

<?php 

/**
  *GOOGLE ANALYTICS POUR VENDEURS 
  Add the Google Analytics Tracking ID field to the settings page for vendors 
  */
add_action( 'wcvendors_settings_after_vendor_store_notice', 'wcv_add_ga_code' ); 
function wcv_add_ga_code(){ 

	$value = get_user_meta( get_current_user_id(), '_wcv_custom_settings_ga_tracking_id', true ); 

	// Output GA property field data 
	WCVendors_Pro_Form_Helper::input(
		apply_filters(
			'wcv_vendor_ga_code',
			array(
				'id'            => '_wcv_custom_settings_ga_tracking_id',
				'label'         => __( 'Google Analytics Tracking ID', 'wcvendors-pro' ),
				'wrapper_start' => '
',
				'wrapper_end'   => '
',
				'value'			=> $value
			)
		)
	);
}


/**
 * Output the vendor google analytics code if they have added their tracking ID to their settings page 
 */
add_action( 'wp_head', 'wcv_add_vendor_ga_code' );
function wcv_add_vendor_ga_code() { 
	global $post; 

	$vendor_id = 0;

	// Not on vendor store page or vendor single product bail out 
	if ( WCV_Vendors::is_vendor_page() ){
		$vendor_shop = urldecode( get_query_var( 'vendor_shop' ) );
		$vendor_id   = WCV_Vendors::get_vendor_id( $vendor_shop );
	} elseif ( is_singular( 'product' ) && WCV_Vendors::is_vendor_product_page( $post->post_author ) ) {
		$vendor_id = $post->post_author;
	}
	
	$vendor_ga_code = wcv_output_vendor_ga_code( $vendor_id ); 
	echo $vendor_ga_code;
}

/**
 * Output the vendor tracking code 
 *
 * @param int $vendor_id - the vendor user ID
 * @return string $ga_code - the google analytics code
 */
function wcv_output_vendor_ga_code( $vendor_id ){

	// Not a vendor? return nothing
	if ( ! WCV_Vendors::is_vendor( $vendor_id ) ) {
		return '';
	}

	$vendor_tracking_id = get_user_meta( $vendor_id, '_wcv_custom_settings_ga_tracking_id', true ); 

	// No tracking code added, return nothing 
	if ( empty( $vendor_tracking_id ) ){ 
		return '';
	}

	$ga_code = sprintf('
	<!-- Global site tag (gtag.js) - Google Analytics added by WC Vendors Pro -->
	<script async src="https://www.googletagmanager.com/gtag/js?id=' . $vendor_tracking_id . '"></script>
	<script>
	  window.dataLayer = window.dataLayer || [];
	  function gtag(){dataLayer.push(arguments);}
	  gtag(\'js\', new Date());
	
	  gtag(\'config\', \' ' .$vendor_tracking_id . ' \');
	</script> '
	);

	return $ga_code;
}
/*FIN GOOGLE ANALYTICS POUR VENDEURS*/