fetch-vendor-package.sh: Remove the older vendor-package am: 815210a13a am: f2fc6fb581 am: 93bdfacfc6 am: 538d7a0192 am: 69bdfb8f0e

Original change: https://android-review.googlesource.com/c/device/linaro/hikey/+/2146079

Change-Id: I2867235f39435683d54ceec28fbfda7c17a35ade
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>