manifest.xml: drop composer hal am: 78535e5da2

Original change: https://android-review.googlesource.com/c/device/linaro/dragonboard/+/3380181

Change-Id: Icb265eb4be39e947ea8e9ada0da51a33b4b5ee52
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>