Remove the resource limit for pod in k8s deployment

For non-image type function, it's the runtime server's reponsibility
to set resource limit for sub-process.

For image type function, we set the limit in pod definition for now,
may provide config option or input param in future.

Change-Id: I6c0e19759df0b964eb63839998327e55b4c4b092

qinling/orchestrator/kubernetes/templates/deployment.j2

@@ -34,13 +34,6 @@ spec:
         volumeMounts:
           - name: package-folder
             mountPath: /var/qinling/packages
-        resources:
-          limits:
-            cpu: "0.3"
-            memory: 128Mi
-          requests:
-            cpu: "0.1"
-            memory: 32Mi
       - name: sidecar
         image: openstackqinling/sidecar
         imagePullPolicy: IfNotPresent