solana: bridge: Delete makefile

The tests no longer need a running instance of the test validator so
this is no longer necessary.

solana/bridge/Makefile

@@ -1,33 +0,0 @@
-BRIDGE_ADDRESS=Bridge1p5gheXUvJ6jGWGeCsgPKgnE3YgdGKRVCMY9o
-# These tests use a different emitter for some reason
-export EMITTER_ADDRESS=CiByUvEcx7w2HA4VHcPCBUAFQ73Won9kB36zW9VjirSr
-
-.PHONY: test .FORCE
-
-.FORCE:
-
-target/deploy/bridge.so: .FORCE
-	cargo build-bpf
-
-/tmp/ledger:
-	mkdir -p $@
-
-test: target/deploy/bridge.so /tmp/ledger
-# Kill solana test validator if already running, as we'll need a new one
-	@if pgrep solana-test; then pkill solana-test; fi
-# Sleep here for a bit so that the process can close the port
-	@sleep 1
-# Start test validator
-# We redirect the logs to test.log in case they're useful
-	solana-test-validator \
-		--ledger /tmp/ledger \
-		--bpf-program ${BRIDGE_ADDRESS} target/deploy/bridge.so \
-		--reset --log > test.log 2>&1 &
-# Sleep for a few seconds so the validator initialises properly
-	@sleep 5
-# Run tests. If the tests fail, we kill the validator, but make sure we return
-# status 1 (for CI)
-	BRIDGE_PAYER=/tmp/ledger/faucet-keypair.json cargo test || (pkill solana-test && exit 1)
-# If the tests succeeded, let's kill the validator
-	@pkill solana-test
-