Remove postcss-bidirection and postcss-class-namespace from dev build (#8155)
Remove postcss-bidirection and postcss-class-namespace from dev build (#8155)

ruturajv/debugger.html,ruturajv/debugger.html,ruturajv/debugger.html,devtools-html/debugger.html,ruturajv/debugger.html,devtools-html/debugger.html,devtools-html/debugger.html,devtools-html/debugger.html,devtools-html/debugger.html,ruturajv/debugger.html,devtools-html/debugger.html,ruturajv/debugger.html,devtools-html/debugger.html,ruturajv/debugger.html