Revert "Add margintop to body content when nav bar appears"

Author: navaneethsnair1

src/main/content/antora_ui/src/js/10-navscroll.js

@@ -96,7 +96,6 @@ var navScroll = (function() {
 
     // adjust docs toolbar and nav position
     $(".toolbar").css("top", nav_height + "px");
-    $(".doc").css("margin-top", nav_height + "px")
     if (window.outerWidth < 1024) {
       $(".nav-container").css(
         "top",
@@ -137,7 +136,6 @@ var navScroll = (function() {
 
     // adjust docs toolbar and nav position
     $(".toolbar").css("top", "0px");
-    $(".doc").css("margin-top", "0px");
     if (window.outerWidth < 1024) {
       $(".nav-container").css("top", $(".toolbar").outerHeight() + "px");
       $(".nav").css("top", "");