fix: remove extraneous comment node on db.xml

See: magento/magento2#40242

Author: damienwebdev

etc/db_schema.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:framework:Setup/Declaration/Schema/etc/schema.xsd">
-    <table name="graycore_graphql_log" resource="default" engine="innodb" comment="">
+    <table name="graycore_graphql_log" resource="default" engine="innodb">
         <column xsi:type="int" name="log_id" unsigned="true" nullable="false" identity="true" />
         <column xsi:type="varchar" name="hash" nullable="false" length="64" />
         <column xsi:type="varchar" name="method" nullable="false" length="4" />