Remove unused method removeAllQosPoliciesForScs am: dae46c94fa am: 3697d37bb3

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

Change-Id: I7acca2f7d23967231ba1adc0f24e72b0ef432bbc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>