Remove archived CNCF project (#1784)

Signed-off-by: Cintia Sánchez García <[email protected]>

Author: cynthia-sg

data/cncf.yaml

@@ -992,20 +992,6 @@
       url: https://github.com/kedacore/keda-docs
       check_sets:
         - docs
-- name: keptn
-  display_name: Keptn
-  description: Cloud-native application life-cycle orchestration. Keptn automates your SLO-driven multi-stage delivery and operations & remediation of your applications.
-  category: app definition
-  logo_url: https://raw.githubusercontent.com/cncf/artwork/master/projects/keptn/icon/color/keptn-icon-color.svg
-  devstats_url: https://keptn.devstats.cncf.io/
-  accepted_at: "2020-06-23"
-  maturity: incubating
-  repositories:
-    - name: keptn
-      url: https://github.com/keptn/lifecycle-toolkit
-      check_sets:
-        - community
-        - code
 - name: keylime
   display_name: Keylime
   description: Bootstrap & Maintain Trust on the Edge / Cloud and IoT