Remove manager option

The 'manager' option in [cells] group was deprecated in Mitaka and
now it is removed completely in newton. There is no impact.

Change-Id: Ia2a5276a6f453db8144cb6b4beab1ac158b4dbf6

manifests/cells.pp

@@ -134,10 +134,6 @@
 #
 # DEPRECATED
 #
-#  [*manager*]
-#    DEPRECATED. Number of instances to update per periodic task run
-#    Defaults to undef
-#
 #  [*driver*]
 #    Cells communication driver to use
 #    Defaults to undef
@@ -171,17 +167,12 @@ class nova::cells (
   $weight_offset                 = '1.0',
   $weight_scale                  = '1.0',
   # Deprecated
-  $manager                       = undef,
   $driver                        = undef,
 ) {
 
   include ::nova::deps
   include ::nova::params
 
-  if $manager {
-    warning('manager parameter is deprecated, has no effect and will be removed in a future release.')
-  }
-
   if $driver {
     warning('driver parameter is now deprecated, has no effect and will be removed at Ocata cycle.')
   }

releasenotes/notes/remove_deprecated_cells_manager_option-1a32b6e1c01d2958.yaml

@@ -0,0 +1,4 @@
+---
+deprecations:
+  - The 'manager' option in [cells] group was deprecated in Mitaka and
+    now it is removed completely in newton. There is no impact.