chore(eks-legacy): delete from v2 (#21667)

We don't publish eks-legacy in v2. This deletes it from the library


----

### All Submissions:

* [ ] Have you followed the guidelines in our [Contributing guide?](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md)

### Adding new Unconventional Dependencies:

* [ ] This PR adds new unconventional dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md/#adding-new-unconventional-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/main/INTEGRATION_TESTS.md)?
	* [ ] Did you use `yarn integ` to deploy the infrastructure and generate the snapshot (i.e. `yarn integ` without `--dry-run`)?

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

.github/workflows/issue-label-assign.yml

@@ -146,7 +146,6 @@ env:
            {"area":"@aws-cdk/aws-ecs-patterns","keywords":["aws-ecs-patterns","ecs-patterns"],"labels":["@aws-cdk/aws-ecs-patterns"],"assignees":["madeline-k"]},
            {"area":"@aws-cdk/aws-efs","keywords":["aws-efs","efs","accesspoint"],"labels":["@aws-cdk/aws-efs"],"assignees":["corymhall"]},
            {"area":"@aws-cdk/aws-eks","keywords":["aws-eks","eks","fargateprofile","fargatecluster"],"labels":["@aws-cdk/aws-eks"],"assignees":["otaviomacedo"]},
-           {"area":"@aws-cdk/aws-eks-legacy","keywords":["aws-eks-legacy","eks-legacy"],"labels":["@aws-cdk/aws-eks-legacy"],"assignees":["otaviomacedo"]},
            {"area":"@aws-cdk/aws-elasticache","keywords":["aws-elasticache","elastic-cache"],"labels":["@aws-cdk/aws-elasticache"],"assignees":["otaviomacedo"]},
            {"area":"@aws-cdk/aws-elasticbeanstalk","keywords":["aws-elasticbeanstalk","elastic-beanstalk"],"labels":["@aws-cdk/aws-elasticbeanstalk"],"assignees":["Naumel"]},
            {"area":"@aws-cdk/aws-elasticloadbalancing","keywords":["aws-elasticloadbalancing","elastic-loadbalancing","elb"],"labels":["@aws-cdk/aws-elasticloadbalancing"],"assignees":["corymhall"]},