xml: remove the CDATA autoClosingPairs. Fixes microsoft#200671 (microsoft#201109)

Author: aeschli

extensions/xml/xml.language-configuration.json

@@ -14,8 +14,7 @@
 		{ "open": "(", "close": ")" },
 		{ "open": "\"", "close": "\"", "notIn": ["string"] },
 		{ "open": "'", "close": "'", "notIn": ["string"] },
-		{ "open": "<!--", "close": "-->", "notIn": [ "comment", "string" ]},
-		{ "open": "<![CDATA[", "close": "]]>", "notIn": [ "comment", "string" ]}
+		{ "open": "<!--", "close": "-->", "notIn": [ "comment", "string" ]}
 	],
 	"surroundingPairs": [
 		{ "open": "'", "close": "'" },