Revert "chore: add user agent sniffing for Edge browser"

This reverts commit c857b2c.

Global UA sniffing is discouraged

Author: Narretz

src/.eslintrc.json

@@ -9,7 +9,6 @@
     /* angular.js */
     "angular": false,
     "msie": false,
-    "edge": false,
     "jqLite": false,
     "jQuery": false,
     "slice": false,

src/Angular.js

@@ -4,7 +4,6 @@
 /* exported
   angular,
   msie,
-  edge,
   jqLite,
   jQuery,
   slice,
@@ -188,7 +187,6 @@ if ('i' !== 'I'.toLowerCase()) {
 
 var
     msie,             // holds major version number for IE, or NaN if UA is not IE.
-    edge,             // true if Microsoft Edge browser. Holds no version number.
     jqLite,           // delay binding since jQuery could be loaded after us.
     jQuery,           // delay binding
     slice             = [].slice,
@@ -210,7 +208,6 @@ var
  */
 msie = window.document.documentMode;
 
-edge = window.navigator.userAgent.indexOf('Edge') > -1;
 
 /**
  * @private

test/.eslintrc.json

@@ -26,7 +26,6 @@
     /* angular.js */
     "angular": false,
     "msie": false,
-    "edge": false,
     "jqLite": false,
     "jQuery": false,
     "slice": false,