chore: remove sequencer go.mod #73

Job	Run time
Determine Image Tag	3s
test / Build All ev-node Binaries	1m 26s
test / Go Mod Tidy Check	29s
proto / buf-check	9s
lint / hadolint	12s
lint / yamllint	10s
lint / golangci-lint	30s
test / Run Unit Tests	3m 1s
lint / goreleaser-check	8s
lint / markdown-lint	1m 56s
test / Run Integration Tests	1m 39s
docker / Build ev-node-evm-single	15m 44s
docker / Build ev-node-testapp	14m 28s
test / Run EVM Execution Tests	2m 0s
test / Run E2E System Tests	4m 44s
test / Combine and Upload Coverage	12s
docker-tests / Docker Upgrade E2E Tests	3m 46s
docker-tests / Docker E2E Tests	6m 36s
	57m 13s

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