remove field-selector from 1.8 (kubernetes#6671)

Author: dixudx

docs/reference/kubectl/cheatsheet.md

@@ -119,9 +119,6 @@ $ kubectl get pods --sort-by='.status.containerStatuses[0].restartCount'
 $ kubectl get pods --selector=app=cassandra rc -o \
   jsonpath='{.items[*].metadata.labels.version}'
 
-# Get all running pods in the namespace
-$ kubectl get pods --field-selector=status.phase=Running
-
 # Get ExternalIPs of all nodes
 $ kubectl get nodes -o jsonpath='{.items[*].status.addresses[?(@.type=="ExternalIP")].address}'
 

docs/reference/kubectl/overview.md

@@ -242,9 +242,6 @@ $ kubectl get rc,services
 
 // List all daemon sets, including uninitialized ones, in plain-text output format.
 $ kubectl get ds --include-uninitialized
-
-// List all pods running on node server01
-$ kubectl get pods --field-selector=spec.nodeName=server01
 ```
 
 `kubectl describe` - Display detailed state of one or more resources, including the uninitialized ones by default.