Remove unused method removeAllQosPoliciesForScs am: dae46c94fa

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/wpa_supplicant_8/+/21938779

Change-Id: I5dd6692c3c5e10df1e0dd5487ff149e9470d3b49
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>