ci: remove forever broken aura tests

scripts/aura-test.sh

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-set -e # fail on any error
-set -u # treat unset variables as error
-
-cargo build -j $(nproc) --release --features final $CARGOFLAGS
-git clone https://github.com/paritytech/parity-import-tests
-cp target/release/parity parity-import-tests/aura/parity
-cd parity-import-tests/aura
-echo "Start Aura test"
-./parity import blocks.rlp --chain chain.json
-./parity restore snap --chain chain.json
-echo "Aura test complete"