removing toc shortcode. (#10720)

content/en/docs/concepts/containers/container-environment-variables.md

@@ -13,7 +13,6 @@ This page describes the resources available to Containers in the Container envir
 
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@@ -63,5 +62,3 @@ if [DNS addon](http://releases.k8s.io/{{< param "githubbranch" >}}/cluster/addon
   [attaching handlers to Container lifecycle events](/docs/tasks/configure-pod-container/attach-handler-lifecycle-event/).
 
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content/en/docs/concepts/containers/container-lifecycle-hooks.md

@@ -14,7 +14,6 @@ to run code triggered by events during their management lifecycle.
 
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@@ -122,5 +121,3 @@ Events:
   [attaching handlers to Container lifecycle events](/docs/tasks/configure-pod-container/attach-handler-lifecycle-event/).
 
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content/en/docs/concepts/containers/images.md

@@ -15,7 +15,6 @@ The `image` property of a container supports the same syntax as the `docker` com
 
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content/en/docs/concepts/containers/runtime-class.md

@@ -15,7 +15,6 @@ This page describes the RuntimeClass resource and runtime selection mechanism.
 
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