Removed git fetch --all since it's rarly used

Author: xitrox

content/cheat-sheet/_index.html

@@ -731,10 +731,6 @@ <h3>Fetch changes and then merge them into your current branch:</h3>
       <span class="or">OR</span>
       <code>git pull</code>
     </div>
-    <div class="item">
-      <h3>Fetch all remotes:</h3>
-      <code>git fetch --all</code>
-    </div>
   </section>
 
   <section>