fix: removed unused images

Removed diagrams and pictures that are no longer referenced
in the markdown

Signed-off-by: Aswin A <[email protected]>
Signed-off-by: Mark S Taylor <[email protected]>

Author: aswinayyolath

README.md

@@ -100,4 +100,4 @@ This repository lists proposals for the Strimzi project. A template for new prop
 
 Strimzi is a <a href="http://cncf.io">Cloud Native Computing Foundation</a> incubating project.
 
-![CNCF ><](./logo/cncf-color.png)
+![CNCF ><](./logo/cncf-color.png)