Update phpunit.xml

Author: mpyw

phpunit.xml

@@ -1,13 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    backupGlobals="false"
-    bootstrap="vendor/autoload.php"
-    colors="true"
-    processIsolation="false"
-    stopOnFailure="false"
-    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
-    cacheDirectory=".phpunit.cache"
-    backupStaticProperties="false">
+<phpunit backupGlobals="false"
+         bootstrap="vendor/autoload.php"
+         colors="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         cacheDirectory=".phpunit.cache"
+         backupStaticProperties="false">
 
     <source>
         <include>