Remove ceilometer transformers config

According ceilometer commit: 9db5c6c9bfc66018aeb78c4a262e1bfa9b326798
ceilometer was removed transformer support
so, remove about transformers config.

Change-Id: I47fc90aa6dff6d0843c90b27a785e0c6b3d2961e
Close-bug: #1830601

ansible/roles/ceilometer/templates/event_pipeline.yaml.j2

@@ -7,7 +7,6 @@ sources:
           - event_sink
 sinks:
     - name: event_sink
-      transformers:
       publishers:
 {% if enable_gnocchi | bool %}
           - gnocchi://

ansible/roles/ceilometer/templates/pipeline.yaml.j2

@@ -5,84 +5,7 @@ sources:
           - "*"
       sinks:
           - meter_sink
-    - name: cpu_source
-      meters:
-          - "cpu"
-      sinks:
-          - cpu_sink
-          - cpu_delta_sink
-    - name: disk_source
-      meters:
-          - "disk.read.bytes"
-          - "disk.read.requests"
-          - "disk.write.bytes"
-          - "disk.write.requests"
-          - "disk.device.read.bytes"
-          - "disk.device.read.requests"
-          - "disk.device.write.bytes"
-          - "disk.device.write.requests"
-      sinks:
-          - disk_sink
-    - name: network_source
-      meters:
-          - "network.incoming.bytes"
-          - "network.incoming.packets"
-          - "network.outgoing.bytes"
-          - "network.outgoing.packets"
-      sinks:
-          - network_sink
 sinks:
     - name: meter_sink
-      transformers:
-      publishers:
-          - gnocchi://
-    - name: cpu_sink
-      transformers:
-          - name: "rate_of_change"
-            parameters:
-                target:
-                    name: "cpu_util"
-                    unit: "%"
-                    type: "gauge"
-                    scale: "100.0 / (10**9 * (resource_metadata.cpu_number or 1))"
-      publishers:
-          - gnocchi://
-    - name: cpu_delta_sink
-      transformers:
-          - name: "delta"
-            parameters:
-                target:
-                    name: "cpu.delta"
-                growth_only: True
-      publishers:
-          - gnocchi://
-    - name: disk_sink
-      transformers:
-          - name: "rate_of_change"
-            parameters:
-                source:
-                    map_from:
-                        name: "(disk\\.device|disk)\\.(read|write)\\.(bytes|requests)"
-                        unit: "(B|request)"
-                target:
-                    map_to:
-                        name: "\\1.\\2.\\3.rate"
-                        unit: "\\1/s"
-                    type: "gauge"
-      publishers:
-          - gnocchi://
-    - name: network_sink
-      transformers:
-          - name: "rate_of_change"
-            parameters:
-                source:
-                   map_from:
-                       name: "network\\.(incoming|outgoing)\\.(bytes|packets)"
-                       unit: "(B|packet)"
-                target:
-                    map_to:
-                        name: "network.\\1.\\2.rate"
-                        unit: "\\1/s"
-                    type: "gauge"
       publishers:
           - gnocchi://