Update knative-offerings.md (#6446)

Seems like TriggerMesh has shut down according to this discussion.

triggermesh/triggermesh#1544

Author: johansja

docs/versioned/install/knative-offerings.md

@@ -24,7 +24,6 @@ Here is a list of commercial Knative products (alphabetically):
 - [IBM Cloud Code Engine](https://cloud.ibm.com/codeengine): A fully-managed serverless platform that runs all your containerized workloads, including http-driven application, batch jobs or event-driven functions.
 - [Nutanix Karbon](https://github.com/nutanix/karbon-platform-services/tree/master/automation/infrastructure/terraform/kcs/install_knative): Extend Nutanix Karbon with serverless capabilities by installing Knative on a Karbon managed Kubernetes cluster.
 - [Red Hat Openshift Serverless](https://docs.openshift.com/container-platform/4.7/serverless/serverless-getting-started.html): enables stateful, stateless, and serverless workloads to all run on a single multi-cloud container platform with automated operations. Developers can use a single platform for hosting their microservices, legacy, and serverless applications.
-- [TriggerMesh](https://triggermesh.com): On-premises and fully-managed Knative and event-driven integration platform. With support for AWS, Azure, Google, and many more cloud and enterprise event sources and brokers. Commercial Knative support and professional services available.
 
 <!-- TODO: In which category do we put SAP/Kyma? -->