Remove unused CSS vars

Author: eps1lon

packages/next/src/client/components/react-dev-overlay/ui/components/call-stack-frame/call-stack-frame.tsx

@@ -41,11 +41,6 @@ export const CallStackFrame: React.FC<{
       data-nextjs-call-stack-frame
       data-nextjs-call-stack-frame-no-source={!hasSource}
       data-nextjs-call-stack-frame-ignored={frame.ignored}
-      style={
-        {
-          '--index': index,
-        } as React.CSSProperties
-      }
     >
       <div className="call-stack-frame-method-name">
         <HotlinkedText text={formattedMethod} />