Remove skip-rebuild option

script/build

@@ -9,7 +9,6 @@ require('colors')
 const argv = require('yargs')
   .usage('Usage: $0 [options]')
   .help('help')
-  .describe('skip-rebuild',  'Skip rebuilding steps (to perform other optional steps)')
   .describe('code-sign',  'Sign the executables (key specified in env vars)')
   .describe('create-installer', 'Create an installer (Windows only)')
   .describe('compress-artifacts', 'Compress Atom binaries (and symbols on macOS)')
@@ -39,19 +38,18 @@ process.on('unhandledRejection', function (e) {
   process.exit(1)
 })
 
-if (!argv.skipRebuild) {
-  cleanOutputDirectory()
-  copyAssets()
-  transpileBabelPaths()
-  transpileCoffeeScriptPaths()
-  transpileCsonPaths()
-  transpilePegJsPaths()
-  generateModuleCache()
-  prebuildLessCache()
-  generateMetadata()
-  generateAPIDocs()
-  downloadChromedriver()
-}
+cleanOutputDirectory()
+copyAssets()
+transpileBabelPaths()
+transpileCoffeeScriptPaths()
+transpileCsonPaths()
+transpilePegJsPaths()
+generateModuleCache()
+prebuildLessCache()
+generateMetadata()
+generateAPIDocs()
+downloadChromedriver()
+
 dumpSymbols()
   .then(packageApplication)
   .then(packagedAppPath => {