ci(0.77): remove diff between 0.76 and 0.77

Author: Saadnajmi

.ado/templates/npm-publish-steps.yml

@@ -3,11 +3,6 @@ parameters:
   publishTag: 'latest'
 
 steps:
-  - checkout: self
-    clean: true
-    fetchFilter: blob:none
-    persistCredentials: true
-
   - template: /.ado/templates/configure-git.yml@self
 
   - script: |