move gulp tasks to sln root

src/App/gulpfile.js

@@ -1,16 +0,0 @@
-const gulp = require('gulp');
-const gulpLess = require('gulp-less');
-const del = require('del');
-
-function less() {
-    return gulp.src(['./Less/android.less', './Less/ios.less', './Less/dark.less', './Less/styles.less'])
-        .pipe(gulpLess())
-        .pipe(gulp.dest('./Css'));
-}
-
-function cleanCss() {
-    return del('./Css');
-}
-
-exports.cleanCss = cleanCss;
-exports.less = gulp.series(cleanCss, less);

src/App/package.json

@@ -1,12 +0,0 @@
-{
-  "name": "bitwarden-mobile",
-  "version": "1.0.0",
-  "scripts": {
-    "less": "gulp less"
-  },
-  "devDependencies": {
-    "del": "4.1.0",
-    "gulp": "4.0.0",
-    "gulp-less": "4.0.1"
-  }
-}