disabled JavaScript compatibility layer

this disables the JavaScript compatibility layer which let pre-jQuery
migration plugins run with their old code.

This will break plugins using outdated JavaScript. These plugins have to
be updated according to https://www.dokuwiki.org/devel:jqueryfaq

As a courtesy to users, the compatibility.js is not deleted, yet.
Undoing this single patch can be used as a temporary workaround.

Author: splitbrain

lib/exe/js.php

@@ -62,7 +62,7 @@ function js_out(){
                 DOKU_INC.'lib/scripts/locktimer.js',
                 DOKU_INC.'lib/scripts/linkwiz.js',
                 DOKU_INC.'lib/scripts/media.js',
-                DOKU_INC.'lib/scripts/compatibility.js',
+# deprecated                DOKU_INC.'lib/scripts/compatibility.js',
 # disabled for FS#1958                DOKU_INC.'lib/scripts/hotkeys.js',
                 DOKU_INC.'lib/scripts/behaviour.js',
                 DOKU_INC.'lib/scripts/page.js',