fetch-vendor-package.sh: Remove the older vendor-package am: e23d672006

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/2146059

Change-Id: I0756f5260e6e9e1f8517a14a4d1d6559961296b1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>