feat: remove DAI gateway from deployment script

[Thegaram]

Purpose or design rationale of this PR

Describe your change. Make sure to answer these three questions: What does this PR do? Why does it do it? How does it do it?

Deploying DAIGateway in the deployment scripts is error prone, since we cannot set L2_DAI_ADDRESS at this point (it's not deployed yet). It's better to let @zimpha deploy it manually.

PR title

Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:

• feat: A new feature

Deployment tag versioning

Has tag in common/version.go been updated or have you added bump-version label to this PR?

• No, this PR doesn't involve a new deployment, git tag, docker image tag
• Yes

Breaking change label

Does this PR have the breaking-change label?

• No, this PR is not a breaking change
• Yes

[github-actions]

LCOV of commit d4ebe90 during Contracts #96

Summary coverage rate:
  lines......: 51.4% (1005 of 1954 lines)
  functions..: 65.1% (224 of 344 functions)
  branches...: no data found

Files changed coverage rate: n/a