formatting fixes, unnecessary code removed

lib/appenders/categoryFilter.js

@@ -1,17 +1,13 @@
-var levels = require('../levels');
+"use strict";
 var log4js = require('../log4js');
 
-function contains(list, value) {
-    return list.indexOf(value) !== -1;
-}
-
 function categoryFilter (excludes, appender) {
   if (typeof(excludes) === 'string') excludes = [excludes];
   return function(logEvent) {
     if (excludes.indexOf(logEvent.categoryName) === -1) {
       appender(logEvent);
     }
-    }
+  };
 }
 
 function configure(config) {

test/categoryFilter-test.js

@@ -18,7 +18,11 @@ vows.describe('log4js categoryFilter').addBatch({
       
       var log4js = require('../lib/log4js'), logEvents = [], webLogger, appLogger;
       log4js.clearAppenders();
-            var appender = require('../lib/appenders/categoryFilter').appender(['app'], function(evt) { logEvents.push(evt); });
+      var appender = require('../lib/appenders/categoryFilter')
+        .appender(
+          ['app'], 
+          function(evt) { logEvents.push(evt); }
+        );
       log4js.addAppender(appender, ["app","web"]);
       
       webLogger = log4js.getLogger("web");