fix linting & remove uneeded classname

apps/remix-ide/src/app/tabs/styles/compile-tab-styles.js

@@ -1,12 +1,9 @@
-var csjs = require('csjs-inject')
+const csjs = require('csjs-inject')
 
 const css = csjs`
   .compilerTabView {
     padding: 2%;
   }
-  .compiler {
-    margin-bottom: 1%;
-  }
 `
 
 module.exports = css