diff --git a/lib/build/multi.js b/lib/build/multi.js
index fe009256..1d611ca0 100644
--- a/lib/build/multi.js
+++ b/lib/build/multi.js
@@ -111,8 +111,6 @@ module.exports = function(config, options){
 			);
 
 			writeStream.on("data", function(builtResult){
-				//this.end();
-
 				// run external steal-tool plugins after the build
 				if(options){
 
@@ -124,16 +122,6 @@ module.exports = function(config, options){
 							return bundleAssets(builtResult, options.bundleAssets);
 						});
 					}
-
-					// steal-serviceworker can't be integrated until we drop support for node 4
-					// tests are written and ready
-					// maybe we come up with a better idea integrate post-build-plugins
-					// if(options.serviceWorker){
-					// 	var precache = require("steal-serviceworker");
-					// 	p = p.then(function (builtResult) {
-					// 		return precache(builtResult, options.serviceWorker);
-					// 	});
-					// }
 				}
 
 				p.then(function (builtResult) {
diff --git a/lib/build/slim.js b/lib/build/slim.js
index b1a6ca5b..62cc217c 100644
--- a/lib/build/slim.js
+++ b/lib/build/slim.js
@@ -94,8 +94,6 @@ module.exports = function(cfg, opts) {
 		);
 
 		final.on("data", function (builtResult) {
-			//this.end();
-
 			// run external steal-tool plugins after the build
 			if (options) {
 				var p = Promise.resolve(builtResult);
@@ -106,16 +104,6 @@ module.exports = function(cfg, opts) {
 						return bundleAssets(builtResult, options.bundleAssets);
 					});
 				}
-
-				// steal-serviceworker can't be integrated until we drop support for node 4
-				// tests are written and ready
-				// maybe we come up with a better idea integrate post-build-plugins
-				// if(options.serviceWorker){
-				// 	var precache = require("steal-serviceworker");
-				// 	p = p.then(function (builtResult) {
-				// 		return precache(builtResult, options.serviceWorker);
-				// 	});
-				// }
 			}
 
 			p.then(function (builtResult) {