src: remove unused function declaration
Checklist
-
make -j8 test
(UNIX), orvcbuild test nosign
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
- src
Description of change
Removes an unused function declaration.
CI: https://ci.nodejs.org/job/node-test-pull-request/4346/
EDIT: CI is green except for a flaky test.