Revert "Merge pull request #5637 from williamkray/wreck/clean-thumbnail-changes"

This reverts commit 5c1b38a48c, reversing
changes made to ec4a39a694.

res/css/views/messages/_MVideoBody.scss

@@ -17,7 +17,7 @@ limitations under the License.
 span.mx_MVideoBody {
     video.mx_MVideoBody {
         max-width: 100%;
-        max-height: 300px;
+        height: auto;
         border-radius: 4px;
     }
 }

res/css/views/rooms/_LinkPreviewWidget.scss

@@ -19,8 +19,6 @@ limitations under the License.
     margin-right: 15px;
     margin-bottom: 15px;
     display: flex;
-    flex-direction: column;
-    max-width: 360px;
     border-left: 4px solid $preview-widget-bar-color;
     color: $preview-widget-fg-color;
 }
@@ -57,9 +55,6 @@ limitations under the License.
     cursor: pointer;
     width: 18px;
     height: 18px;
-    padding: 0px 5px 5px 5px;
-    margin-left: auto;
-    margin-right: 0px;
 
     img {
         flex: 0 0 40px;