docs: remove installer tmpl link (gravitational#46213)

Co-authored-by: Steven Martin <stevenmartin@Stevens-MBP.fios-router.home>

docs/pages/enroll-resources/auto-discovery/servers/azure-discovery.mdx

@@ -305,6 +305,4 @@ logs can be found on the targeted VM at
 - Read [Joining Nodes via Azure Managed Identity](../../agents/join-services-to-your-cluster/azure.mdx)
   for more information on Azure tokens.
 - Full documentation on Azure discovery configuration can be found through the [
-  config file reference documentation](../../../reference/config.mdx).
-- The complete default installer can be found [with the Teleport source
-](https://github.com/gravitational/teleport/blob/branch/v(=teleport.major_version=)/api/types/installers/installer.sh.tmpl).
+  config file reference documentation](../../../reference/config.mdx).

docs/pages/enroll-resources/auto-discovery/servers/ec2-discovery.mdx

@@ -351,6 +351,4 @@ for more information on IAM Invite Tokens.
 Manager can be found for in the [AWS Cloud Operations & Migrations Blog
 ](https://aws.amazon.com/blogs/mt/applying-managed-instance-policy-best-practices/).
 - Full documentation on EC2 discovery configuration can be found through the [
-config file reference documentation](../../../reference/config.mdx).
-- The complete default installer can be found [with the Teleport source
-](https://github.com/gravitational/teleport/blob/branch/v(=teleport.major_version=)/api/types/installers/installer.sh.tmpl).
+config file reference documentation](../../../reference/config.mdx).

docs/pages/enroll-resources/auto-discovery/servers/gcp-discovery.mdx

@@ -275,6 +275,4 @@ for details on alternate methods.
 - Read [Joining Services via GCP](../../../enroll-resources/agents/join-services-to-your-cluster/gcp.mdx)
   for more information on GCP tokens.
 - Full documentation on GCP discovery configuration can be found through the [
-  config file reference documentation](../../../reference/config.mdx).
-- The complete default installer can be found [with the Teleport source
-](https://github.com/gravitational/teleport/blob/branch/v(=teleport.major_version=)/api/types/installers/installer.sh.tmpl).
+  config file reference documentation](../../../reference/config.mdx).