Remove irsa from static deployments (awslabs#665)

**Which issue is resolved by this Pull Request:**
Resolves #

**Description of your changes:**
Holdover fix to remove these from static, will attempt a refactor for a
cleaner fix.

**Testing:**
- [ ] Unit tests pass
- [ ] e2e tests pass
- Details about new tests (If this PR adds a new feature)
- Details about any manual tests performed

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

charts/apps/kubeflow-pipelines/rds-s3-static/templates/ServiceAccount/ml-pipeline-kubeflow-ServiceAccount.yaml

@@ -1,8 +1,6 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  annotations:
-    eks.amazonaws.com/role-arn: '{{ .Values.irsa.roleArn }}'
   labels:
     app.kubernetes.io/component: ml-pipeline
     app.kubernetes.io/name: kubeflow-pipelines

charts/apps/kubeflow-pipelines/s3-only-static/templates/ServiceAccount/ml-pipeline-kubeflow-ServiceAccount.yaml

@@ -1,8 +1,6 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
-  annotations:
-    eks.amazonaws.com/role-arn: '{{ .Values.irsa.roleArn }}'
   labels:
     app.kubernetes.io/component: ml-pipeline
     app.kubernetes.io/name: kubeflow-pipelines