Settins MD Refresh: Fix buttons spacing in address dialog.

Bug: 854353
Cq-Include-Trybots: luci.chromium.try:closure_compilation
Change-Id: I2e8a75a0e87dab4b9fb806420b9961d509651b09
Reviewed-on: https://chromium-review.googlesource.com/1106969Reviewed-by: Scott Chen <scottchen@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568637}

chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html

@@ -54,10 +54,6 @@
         margin-bottom: var(--cr-form-field-bottom-spacing);
       }
 
-      #saveButton {
-        -webkit-margin-start: 8px;
-      }
-
       #dialog {
         --cr-dialog-body-container: {
           max-height: 450px;