The number of arguments and their values were generated and passed by
the individual fuzzers, but were unused by the caller. Instead, default
arguments are generated in {MakeDefaultInterpreterArguments} and
{MakeDefaultArguments}.
Thus this CL removes the dead parameters and assignments.

R=ahaas@chromium.org

Change-Id: I5ca5b06a0848c2a89e70ed739f44bc2161fcb2bb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3003464
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75560}