[Glitch] Use the new JSX transform everywhere

Port 8f66126b10 to glitch-soc

app/javascript/flavours/glitch/utils/icons.jsx

@@ -1,7 +1,3 @@
-import React from 'react';
-
-// Copied from emoji-mart for consistency with emoji picker and since
-// they don't export the icons in the package
 export const loupeIcon = (
   <svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' width='13' height='13'>
     <path d='M12.9 14.32a8 8 0 1 1 1.41-1.41l5.35 5.33-1.42 1.42-5.33-5.34zM8 14A6 6 0 1 0 8 2a6 6 0 0 0 0 12z' />