Remove upstream trailer layout feature from configuration and UI

Jellyfin.Plugin.MediaBarEnhanced/Web/mediaBarEnhanced.css

@@ -343,50 +343,6 @@
   z-index: 1;
 }
 
-.video-container {
-  position: absolute;
-  top: 0;
-  right: 0;
-  height: 100%;
-  width: 0;
-  z-index: 2;
-  overflow: hidden;
-  transition:
-    width 0.5s ease-in-out,
-    opacity 0.5s ease-in-out;
-  opacity: 0;
-  pointer-events: none;
-  mask-image:
-    linear-gradient(to right, transparent 10%, black 30%),
-    linear-gradient(to top, transparent 2%, rgba(0, 0, 0, 0.5) 6%, black 8%);
-
-  -webkit-mask-image:
-    linear-gradient(to right, transparent 10%, black 30%),
-    linear-gradient(to top, transparent 2%, rgba(0, 0, 0, 0.5) 6%, black 8%);
-
-  mask-composite: intersect;
-  -webkit-mask-composite: source-in;
-}
-
-.video-container.active {
-  opacity: 1;
-  pointer-events: auto;
-  width: 100%;
-}
-
-.video-player {
-    width: 100%;
-    height: 100%;
-}
-
-/* Ensure video inside container fills it */
-.video-container iframe,
-.video-container video {
-    width: 100%;
-    height: 100%;
-    border: none;
-}
-
 .backdrop-container {
   position: absolute;
   top: 0%;
@@ -423,10 +379,6 @@
   object-position: center 20%;
   border-radius: 5px;
   z-index: 3;
-  transition:
-    width 0.5s ease-in-out,
-    mask-image 0.5s ease-in-out,
-    -webkit-mask-image 0.5s ease-in-out;
   mask-image: linear-gradient(to top,
       #fff0 2%,
       rgb(0 0 0 / 0.5) 6%,
@@ -437,20 +389,6 @@
       #000000 8%);
 }
 
-.backdrop.with-video {
-  width: 100%;
-  mask-image:
-    linear-gradient(to top, #fff0 2%, rgb(0 0 0 / 0.5) 6%, #000000 8%),
-    linear-gradient(to right, black 30%, transparent 85%);
-
-  -webkit-mask-image:
-    linear-gradient(to top, #fff0 2%, rgb(0 0 0 / 0.5) 6%, #000000 8%),
-    linear-gradient(to right, black 30%, transparent 85%);
-
-  mask-composite: source-in;
-  -webkit-mask-composite: source-in;
-}
-
 .backdrop-overlay {
   position: absolute;
   top: 0;