Tests QUnit: Remove restriction on running the TinyMCE Textpattern WP plugin tests in PhantomJS.

Props @desrosj.
Fixes #42009.

git-svn-id: https://develop.svn.wordpress.org/trunk@49556 602fd350-edb4-49c9-b593-d223f7449a82

tests/qunit/wp-includes/js/tinymce/plugins/wptextpattern/plugin.js

@@ -2,12 +2,6 @@
 	var editor,
 		count = 0;
 
-	// Temporarily disadle these tests in PhantomJS.
-	// Seems editor.selection.getRng() in mceType() fails there, but works properly in the browsers.
-	if ( /PhantomJS/.test( navigator.userAgent ) ) {
-		return;
-	}
-
 	if ( tinymce.Env.ie && tinymce.Env.ie < 11 ) {
 		return;
 	}