buffer: removed unneeded FastBuffer constructor

PR-URL: #19684
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Jackson Tian <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: TimothyGu

lib/buffer.js

@@ -76,11 +76,7 @@ const { setupBufferJS } = internalBuffer;
 
 const bindingObj = {};
 
-class FastBuffer extends Uint8Array {
-  constructor(arg1, arg2, arg3) {
-    super(arg1, arg2, arg3);
-  }
-}
+class FastBuffer extends Uint8Array {}
 FastBuffer.prototype.constructor = Buffer;
 internalBuffer.FastBuffer = FastBuffer;