Misc: Update license owner; remove deprecated licenses field

Author: dmethvin

LICENSE.txt

@@ -1,5 +1,4 @@
-Copyright jQuery Foundation and other contributors
-https://jquery.org/
+Copyright OpenJS Foundation and other contributors, https://openjsf.org/
 
 This software consists of voluntary contributions made by many
 individuals. For exact contribution history, see the revision history

package.json

@@ -6,12 +6,7 @@
     "url": "https://github.com/jquery/jquery-mousewheel/blob/master/AUTHORS.txt"
   },
   "description": "A jQuery plugin that adds cross-browser mouse wheel support.",
-  "licenses": [
-    {
-      "type": "MIT",
-      "url": "https://github.com/jquery/jquery-mousewheel/blob/master/LICENSE.txt"
-    }
-  ],
+  "license": "MIT",
   "homepage": "https://github.com/jquery/jquery-mousewheel",
   "main": "./jquery.mousewheel.js",
   "repository": {