chore: remove unused `start-core.sh` script

diff --git a/ci/start-core.sh b/ci/start-core.sh
deleted file mode 100755 (executable)
index 4c0bb69..0000000
--- a/ci/start-core.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env sh
-
-echo "Starting bitcoin node."
-mkdir $GITHUB_WORKSPACE/.bitcoin
-/root/bitcoind -regtest -server -daemon -datadir=$GITHUB_WORKSPACE/.bitcoin -fallbackfee=0.0002 -rpcallowip=0.0.0.0/0 -rpcbind=0.0.0.0 -blockfilterindex=1 -peerblockfilters=1
-
-echo "Waiting for bitcoin node."
-until /root/bitcoin-cli -regtest -datadir=$GITHUB_WORKSPACE/.bitcoin getblockchaininfo; do
-    sleep 1
-done
-/root/bitcoin-cli -regtest -datadir=$GITHUB_WORKSPACE/.bitcoin createwallet $BDK_RPC_WALLET
-echo "Generating 150 bitcoin blocks."
-ADDR=$(/root/bitcoin-cli -regtest -datadir=$GITHUB_WORKSPACE/.bitcoin -rpcwallet=$BDK_RPC_WALLET getnewaddress)
-/root/bitcoin-cli -regtest -datadir=$GITHUB_WORKSPACE/.bitcoin generatetoaddress 150 $ADDR