playbook/upgrader: remove useless playbook_sha256sum fact

ansible will exit if there is a sha256sum mismatch, no
need to check rc code

playbook/roles/upgrader/tasks/main.yml

@@ -61,19 +61,18 @@
 
   - name: Check uncompressed archive sha256sum
     shell: cd /opt/upgrader/tmp && find . -type f ! -name 'sha256sum' -print0 | LC_ALL=C sort -z | xargs -0 sha256sum | sha256sum --check sha256sum
-    register: playbook_sha256sum
 
   - shell: cp -R /opt/upgrader/tmp /opt/upgrader/playbook
-    when: playbook_folder.stat.exists == False and playbook_sha256sum.rc == 0
+    when: playbook_folder.stat.exists == False
 
   - stat: path=/opt/upgrader/tmp/hosts
     register: hosts_file
 
   - shell: rm -rf /opt/upgrader/playbook-tmp
-    when: hosts_file.stat.exists == True and playbook_sha256sum.rc == 0
+    when: hosts_file.stat.exists == True
 
   - shell: cp -R /opt/upgrader/tmp /opt/upgrader/playbook-tmp
-    when: hosts_file.stat.exists == True and playbook_sha256sum.rc == 0
+    when: hosts_file.stat.exists == True
 
   - name: Save new archive MD5
     stat:

playbook/sha256sum

-f7db67d2806f9f32c0e9b3dfe3979a8ec73df099ecb3124a3f788171947150b8  -
+f2ded4ea43a9b05bd99bc07fdb07c12a51bf0aa1fe07c83a24d5ac1e8322ac85  -