base: remove wrap_descriptor
base: remove wrap_descriptor

After the preceding patch series, it is now unused.

BUG=None
TEST=tools/presubmit

Change-Id: I8639357db101517de830ef4e3e33bc40980391b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3572771
Reviewed-by: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Noah Gold <2d4550d8af93bfc6e6fbe1fb1b0cc97a9ee7c3ce@google.com>
Commit-Queue: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm