Removed unnecessary mapping and tests handled by React's existing warnings.

Author: Johnny Zarate

lib/rules/no-unknown-property.js

@@ -21,8 +21,7 @@ const DOM_ATTRIBUTE_NAMES = {
   'accept-charset': 'acceptCharset',
   class: 'className',
   for: 'htmlFor',
-  'http-equiv': 'httpEquiv',
-  crossorigin: 'crossOrigin'
+  'http-equiv': 'httpEquiv'
 };
 
 const ATTRIBUTE_TAGS_MAP = {

tests/lib/rules/no-unknown-property.js

@@ -80,12 +80,6 @@ ruleTester.run('no-unknown-property', rule, {
     code: '<rect clip-path="bar" />;',
     output: '<rect clipPath="bar" />;',
     errors: [{message: 'Unknown property \'clip-path\' found, use \'clipPath\' instead'}]
-  }, {
-    code: '<script crossorigin />',
-    errors: [{message: 'Unknown property \'crossorigin\' found, use \'crossOrigin\' instead'}]
-  }, {
-    code: '<div crossorigin />',
-    errors: [{message: 'Unknown property \'crossorigin\' found, use \'crossOrigin\' instead'}]
   }, {
     code: '<div crossOrigin />',
     errors: [{message: 'Invalid property \'crossOrigin\' found on tag \'div\', but it is only allowed on: script, img, video'}]