remove flowchart

Signed-off-by: Matthias Bertschy <[email protected]>

Author: matthyx

keps/sig-node/753-sidecar-containers/README.md

@@ -859,15 +859,6 @@ works for that scenario as well as a more and more popular scenario of limited t
 graceful termination is set by external requirement and Pods needs to do best to gracefully terminate
 as much as possible (think of a Spot Instances with 30 seconds notification).
 
-```mermaid
-flowchart TD
-    A[Start] --> B{Is it?}
-    B -->|Yes| C[OK]
-    C --> D[Rethink]
-    D --> B
-    B ---->|No| E[End]
-```
-
 Here is the proposed approach:
 1. Sidecar containers that have a `PreStop` hook will be notified when the Pod has begun terminating
    by executing the `PreStop` hook. This happens at the same time as regular containers, and begins