CDPCP-12151 Removed incorrect Datahub cluster_template_name validation

[daszabo]

No description provided.

[github-actions]

Go test coverage: 30.8% for commit 5cf4602

⚠️ 2 of 11 packages have zero coverage.

• github.com/cloudera/terraform-provider-cdp/resources/de
• github.com/cloudera/terraform-provider-cdp/resources/ml

View coverage for all packages

# Package Name                                                      | Coverage
+ github.com/cloudera/terraform-provider-cdp/cdpacctest             |    26.9%
+ github.com/cloudera/terraform-provider-cdp/provider               |    78.7%
+ github.com/cloudera/terraform-provider-cdp/resources/datahub      |    36.5%
+ github.com/cloudera/terraform-provider-cdp/resources/datalake     |     7.7%
- github.com/cloudera/terraform-provider-cdp/resources/de           |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/environments |    47.9%
+ github.com/cloudera/terraform-provider-cdp/resources/iam          |     1.9%
- github.com/cloudera/terraform-provider-cdp/resources/ml           |     0.0%
+ github.com/cloudera/terraform-provider-cdp/resources/opdb         |    26.7%
+ github.com/cloudera/terraform-provider-cdp/utils                  |    43.3%
+ github.com/cloudera/terraform-provider-cdp/utils/test             |    68.8%