storageproxyd: Remove setuid/setgid SELinux permissions am: 78011e9f3a

Original change: https://android-review.googlesource.com/c/device/google/gs101-sepolicy/+/2154700

Change-Id: I611a9f1ecd6157c3d1f65c250c698a9ee00a0915
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>