Standardise files with files in sous-chefs/repo-management (#176)

Signed-off-by: kitchen-porter <board@sous-chefs.org>

.overcommit.yml

@@ -11,10 +11,6 @@ PreCommit:
     enabled: true
     required_executable: 'cookstyle'
     command: ["cookstyle"]
-  Delivery:
-    enabled: true
-    required_executable: 'delivery'
-    flags: ['local', 'all']
 CommitMsg:
   HardTabs:
     enabled: true

CHANGELOG.md

@@ -4,6 +4,8 @@ This file is used to list changes made in each version of the postfix cookbook.
 
 ## Unreleased
 
+Standardise files with files in sous-chefs/repo-management
+
 ## 6.0.6 - *2022-02-02*
 
 - Update tested platforms