remove RuntimeData from cluster and types

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
(cherry picked from commit 8eeba751983d6499a07fcd21c26f381eb1d17d19)

components/engine/api/swagger.yaml

@@ -2174,9 +2174,6 @@ definitions:
       Runtime:
         description: "Runtime is the type of runtime specified for the task executor."
         type: "string"
-      RuntimeData:
-        description: "RuntimeData is the payload sent to be used with the runtime for the executor."
-        type: "array"
       Networks:
         type: "array"
         items:

components/engine/api/types/swarm/task.go

@@ -67,9 +67,6 @@ type TaskSpec struct {
 	ForceUpdate uint64
 
 	Runtime RuntimeType `json:",omitempty"`
-	// TODO (ehazlett): this should be removed and instead
-	// use struct tags (proto) for the runtimes
-	RuntimeData []byte `json:",omitempty"`
 }
 
 // Resources represents resources (CPU/Memory).