Q:

How to remove the "Save" button from checkout cart summary form?

On the first checkout page (checkout/xx/checkout), there is a view which displays line items for the order.  The view appears to be named "Shopping cart summary (Commerce Order)"
When I add the standard Delete button to the view (for deleting line items), it causes a Save button to appear below the line items.
How do I remove that Save button?
Update:
I tried a form-specific hook_form_alter(), but didn't find the Save button in the $form array. It appears to be a form embedded in another form.  Reading answer from @Yogesh made me realize that maybe I had the wrong $form_id and can debug with a general hook_form_alter() and look for a nested call for the embedded form.

A:

One way of doing this is implementing hook_form_alter and hiding save button. Check example below:
function [MODULE_NAME]_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id = 'YOUR_FORM_ID') {
    // Set access to FALSE will prevent rendering form element on form.
    // Check the hierarchy of 'Save' button, before using #access.
    $form['actions']['save']['#access'] = FALSE;
  }
}

