Do not bind context when unneeded

lib/cartodb/controllers/layergroup.js

@@ -265,7 +265,7 @@ LayergroupController.prototype.analysisNodeStatus = function (analysisStatusBack
 
             next();
         });
-    }.bind(this);
+    };
 };
 
 function getRequestParams(locals) {
@@ -319,7 +319,7 @@ LayergroupController.prototype.getDataview = function (dataviewBackend) {
 
             next();
         });
-    }.bind(this);
+    };
 };
 
 LayergroupController.prototype.dataviewSearch = function (dataviewBackend) {
@@ -338,7 +338,7 @@ LayergroupController.prototype.dataviewSearch = function (dataviewBackend) {
 
             next();
         });
-    }.bind(this);
+    };
 };
 
 LayergroupController.prototype.attributes = function (attributesBackend) {
@@ -359,7 +359,7 @@ LayergroupController.prototype.attributes = function (attributesBackend) {
 
             next();
         });
-    }.bind(this);
+    };
 };
 
 function getStatusCode(tile, format){
@@ -419,7 +419,7 @@ LayergroupController.prototype.tile = function (tileBackend) {
             global.statsClient.increment('windshaft.tiles.success');
             global.statsClient.increment('windshaft.tiles.' + formatStat + '.success');
         });
-    }.bind(this);
+    };
 };
 
 LayergroupController.prototype.layer = function (tileBackend) {
@@ -455,7 +455,7 @@ LayergroupController.prototype.layer = function (tileBackend) {
             global.statsClient.increment('windshaft.tiles.success');
             global.statsClient.increment('windshaft.tiles.' + formatStat + '.success');
         });
-    }.bind(this);
+    };
 };
 
 LayergroupController.prototype.tileError = function () {
@@ -509,7 +509,7 @@ LayergroupController.prototype.center = function (previewBackend) {
 
             next();
         });
-    }.bind(this);
+    };
 };
 
 LayergroupController.prototype.bbox = function (previewBackend) {
@@ -544,7 +544,7 @@ LayergroupController.prototype.bbox = function (previewBackend) {
 
             next();
         });
-    }.bind(this);
+    };
 };
 
 LayergroupController.prototype.setLastModifiedHeader = function () {