fs: remove no-longer-relevant comment
The comment suggests that the subsequent code could by DRYed up, due to simply passing arguments along. However, in the commits since then, this no longer appears to apply, and so the comment is now confusing with respect to the current code.
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
fs