ansible: remove scaleway hosts apt workaround

Hosts at scaleway were removed from the inventory so there are no
longer any matching hosts.

ansible/roles/package-upgrade/tasks/partials/apt.yml

@@ -5,16 +5,9 @@
 #
 
 - name: upgrade installed packages
-  when: "'scaleway-ubuntu1804-armv7l' not in inventory_hostname"
-  apt: upgrade=dist update_cache=yes
-
-  # kernel upgrades on the scaleway hosts are dicey
-  # see https://github.com/scaleway/image-ubuntu/issues/132 for kernel woes
-- name: upgrade installed packages (safe)
-  when: "'scaleway-ubuntu1804-armv7l' in inventory_hostname"
-  apt: upgrade=safe update_cache=yes
-  environment:
-    FLASH_KERNEL_SKIP: true
+  apt:
+    update_cache: yes
+    upgrade: dist
 
 - name: clean unwanted packages
   apt: