remove dev preview from olm config so that CSV looks correct for GA (#77)

Issue #, if available:
NA

Description of changes:
removing dev preview since this controller is about to go GA.

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

Signed-off-by: Adam D. Cornett <adc@redhat.com>

Author: acornett21

olm/olmconfig.yaml

@@ -18,7 +18,7 @@ description: |-
 
 
   This controller is a component of the [AWS Controller for Kubernetes](https://github.com/aws/aws-controllers-k8s)
-  project. This project is currently in **developer preview**.
+  project.
 
 
   **Pre-Installation Steps**