Patch for Abandoned Cart Lite for WooCommerce - https://wordpress.org/support/topic/gdpr-email-message-in-checkout-required-fields-list/

wcal_data_tracking_message.diff

--- includes/wcal_data_tracking_message.orig.php	2018-11-01 13:18:12.000000000 +0000
+++ includes/wcal_data_tracking_message.php	2019-03-26 12:01:14.853387900 +0000
@@ -24,6 +24,9 @@
             // Shop Page notice
             add_action( 'woocommerce_before_shop_loop', array( &$this, 'wcal_add_logged_msg' ), 10 );
             //add_action( 'woocommerce_after_shop_loop_item', array( &$this, 'wcal_add_logged_msg' ), 10 );
+			
+			// Checkout page required field filter
+			add_action( 'woocommerce_checkout_required_field_notice', array( &$this, 'wcal_remove_gdpr_msg' ), 10, 2 );
         }
         
         /**
@@ -68,6 +71,29 @@
                 }
             }
         }
+		
+        /**
+         * Remove the extra Billing_email text from the required field error message.
+         * Called on Checkout page
+         * 
+         * @hook woocommerce_checkout_required_field_notice
+		 *
+         * @since 5.2.2
+         */
+		static function wcal_remove_gdpr_msg( $message, $field_label ) {
+            if ( ! is_user_logged_in() ) {
+                // check if any message is present in the settings
+                $guest_msg = get_option( 'wcal_guest_cart_capture_msg' );
+
+                if ( isset( $guest_msg ) && '' != $guest_msg ) {
+					$guest_msg = esc_html( "<br><small>$guest_msg</small>" );
+					if ( false !== strpos( $message, $guest_msg ) ) {
+						$message = str_replace( $guest_msg, '', $message );
+					}
+                }
+            }
+            return $message;
+		}
         
     } // end of class
     $Wcal_Tracking_msg = new Wcal_Tracking_msg();