test: drop shadowed ignoreAttributes option

[rajanpanth]

spec/pathExpression_spec.js sets ignoreAttributes twice in the same object literal:

const parser = new XMLParser({
  ignoreAttributes: false,
  jPath: false,
  ignoreAttributes: (attrName, matcher) => { ... }
});

The later function wins, so the boolean never reaches the parser. esbuild flags it as duplicate-object-key, and most lint configs would too.

The test still passes for the right reason today, since the function is what the spec is about. The risk is the reverse reading: the literal looks like it exercises ignoreAttributes: false alongside the function, so anyone later removing the function would assume boolean behaviour was still covered here when it never was.

Removing the dead line only. 21 specs in the file pass, and the esbuild duplicate-key warning is gone.

Modest severity, flagging that honestly — it's dead code in a test rather than a behaviour bug.