Remove references for creating free clusters, no longer supported

[mattshaw92]

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Output from acceptance testing:

==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test $(go list ./... |grep -v 'vendor') -v -run=TestAccIBMContainerClusterDataSource_basic -timeout 700m
?   	github.com/IBM-Cloud/terraform-provider-ibm	[no test files]
?   	github.com/IBM-Cloud/terraform-provider-ibm/ibm/acctest	[no test files]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/conns	(cached) [no tests to run]
?   	github.com/IBM-Cloud/terraform-provider-ibm/ibm/flex	[no test files]
?   	github.com/IBM-Cloud/terraform-provider-ibm/ibm/provider	[no test files]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/apigateway	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/appconfiguration	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/appid	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/atracker	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/catalogmanagement	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cdtektonpipeline	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cdtoolchain	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cis	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/classicinfrastructure	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cloudant	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cloudfoundry	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cloudshell	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/codeengine	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/contextbasedrestrictions	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cos	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/database	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/directlink	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/dnsservices	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/enterprise	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/eventnotification	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/eventstreams	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/functions	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/globaltagging	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/hpcs	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/iamaccessgroup	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/iamidentity	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/iampolicy	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/kms	(cached) [no tests to run]
=== RUN   TestAccIBMContainerClusterDataSource_basic
--- PASS: TestAccIBMContainerClusterDataSource_basic (728.76s)
PASS
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/kubernetes	731.089s
?   	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/kubernetes/utils/softwaredefinedstorage	[no test files]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/metricsrouter	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/mqcloud	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/power	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/project	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/pushnotification	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/registry	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/resourcecontroller	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/resourcemanager	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/satellite	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/scc	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/schematics	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/secretsmanager	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/transitgateway	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/usagereports	(cached) [no tests to run]
ok  	github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/vpc	(cached) [no tests to run]
?   	github.com/IBM-Cloud/terraform-provider-ibm/ibm/validate	[no test files]
?   	github.com/IBM-Cloud/terraform-provider-ibm/version	[no test files]

Full results: #4987

[mattshaw92]

TestAccIBMContainerClusterDataSource_basic.txt