Remove hack around property write to `module.exports` not being captured

[jeongsoolee09]

The current CodeQL for JavaScript library class Module fails to capture irregular JavaScript code that mixes ES2015 modules and CommonJS ones. This means that the code like below fails to register as a Module:

import fs from "fs";

module.exports = (srv) => { srv.on(...) }

This makes capturing the portion (srv) => { srv.on(...) } above impossible using standard library code. The current hack is to describe the property write directly in a low-level fashion:

exists(PropWrite moduleExports |
  moduleExports.getBase().asExpr().(VarAccess).getName() = "module" and
  moduleExports.getPropertyName() = "exports" and
  this = moduleExports.getRhs()
)

But this is obviously not ideal. Therefore, after the CodeQL Standard Library for JavaScript is fixed, remove the above code and replace it with any(Module module_).getABulkExportedNode().