Revert "XOS/NEM charts, use a global registry var, split docker image name/tag/pullPolicy"

This reverts commit 1f58c2afbd680c8c618bff6f66e9982515dd1caf.

Change-Id: I0d7ef37a420168276472675b005482d6d11daabd
diff --git a/xos-tools/kafkacat/Chart.yaml b/xos-tools/kafkacat/Chart.yaml
index 39e9fb5..dadfad4 100644
--- a/xos-tools/kafkacat/Chart.yaml
+++ b/xos-tools/kafkacat/Chart.yaml
@@ -15,9 +15,4 @@
 
 name: kafkacat
 description: A Helm chart for kafkacat
-icon: https://kafka.apache.org/images/logo.png
-
-version: 1.0.0
-
-# version of confluentinc/cp-kafkacat container
-appVersion: 4.1.2
+version: 1.0.0-dev