Remove stray old-style KEP metadata

Author: danwinship

keps/sig-network/580-pod-readiness-gates/README.md

@@ -1,23 +1,3 @@
----
-title: Pod Ready++
-authors:
-  - "freehan@"
-owning-sig: sig-network
-participating-sigs:
-  - sig-node
-  - sig-cli
-reviewers:
-  - thockin@
-  - dchen1107@
-approvers:
-  - thockin@
-  - dchen1107@
-editor: "freehan@"
-creation-date: 2018-04-01
-last-updated: 2018-04-01
-status: provisional
----
-
 # Pod Ready++