Removed deleting 'src' dir while building

gulpfile.js

 var browserify = require('browserify');
-var del        = require('del');
 var source     = require('vinyl-source-stream');
 
 var gulp      = require('gulp');
@@ -137,8 +136,5 @@ gulp.task('watch', ['pretest'], function () {
 });
 
 gulp.task('build', ['files', 'images', 'markup', 'scripts', 'styles']);
-gulp.task('clean', ['build'], function () {
-    return del(paths.srcDir);
-});
 
-gulp.task('default', ['clean']);
+gulp.task('default', ['build']);

package.json

 {
-	"name": "project",
+	"name":    "project",
 	"version": "version",
 	
 	"scripts": {
@@ -12,18 +12,17 @@
 	"devDependencies": {
 		"browserify":          "^14.1.0",
 		"concurrently":        "^3.4.0",
-		"del":                 "^2.2.2",
 		"lite-server":         "^2.3.0",
 		"gulp-streamify":      "^1.0.2",
 		"vinyl-source-stream": "^1.1.0",
-		"gulp":              "^3.9.1",
-		"gulp-cssnano":      "^2.1.2",
-		"gulp-empty":        "^0.1.1",
-		"gulp-htmlmin":      "^3.0.0",
-		"gulp-less":         "^3.3.0",
-		"gulp-pug":          "^3.3.0",
-		"gulp-rename":       "^1.2.2",
-		"gulp-uglify":       "^2.1.0",
+		"gulp":                "^3.9.1",
+		"gulp-cssnano":        "^2.1.2",
+		"gulp-empty":          "^0.1.1",
+		"gulp-htmlmin":        "^3.0.0",
+		"gulp-less":           "^3.3.0",
+		"gulp-pug":            "^3.3.0",
+		"gulp-rename":         "^1.2.2",
+		"gulp-uglify":         "^2.1.0",
 		
 		"jquery": "^3.1.1"
 	}