cinnamonDBus: remove leftover debug comment in GetInputSources

Remove a stray '// global.log(source.preferences);' debug line that
was accidentally left in GetInputSources().

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: KAMI911

js/ui/cinnamonDBus.js

@@ -560,7 +560,6 @@ var CinnamonDBus = class {
 
         for (let idx in sources) {
             const source = sources[idx];
-            // global.log(source.preferences);
             ret.push([
                 source.type,
                 source.id,