Remove obsolete attributes in language xml

Author: BurntimeX

snippets/migration/wsc54/en_new.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<language xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/5.4/language.xsd" languagecode="en" languagename="English" countrycode="gb">
+<language xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/5.4/language.xsd" languagecode="en">
 	<import>
 		<category name="wcf.foo">
 			<item name="wcf.foo.bar"><![CDATA[Bar]]></item>

snippets/migration/wsc54/en_new_with_delete.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<language xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/5.4/language.xsd" languagecode="en" languagename="English" countrycode="gb">
+<language xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/5.4/language.xsd" languagecode="en">
 	<import>
 		<category name="wcf.foo">
 			<item name="wcf.foo.bar"><![CDATA[Bar]]></item>

snippets/migration/wsc54/en_old.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<language xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/5.4/language.xsd" languagecode="en" languagename="English" countrycode="gb">
+<language xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/5.4/language.xsd" languagecode="en">
 	<category name="wcf.foo">
 		<item name="wcf.foo.bar"><![CDATA[Bar]]></item>
 	</category>