src: remove 2nd `undefined` argument in node_file.cc
In the document for fs, there are several functions that state "No arguments other than a possible exception are given to the completion callback." (ex> fs.access, fs.chmod, fs.close, ..)
But, the functions are invoking the callback with two parameters (err, undefined)
It causes problems in using several API like async.waterfall.
Fixes: https://github.com/nodejs/node/issues/20335
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows [commit guidelines]