Remove some outdated transforms

Author: agriyakhetarpal

assets/theme-css/sphinx-design/_dropdown.scss

@@ -126,15 +126,6 @@ details.sd-dropdown {
     transform: scale(1.1);
   }
 
-  // Combined transform for open state with hover
-  &[open]:hover > .sd-summary-title .sd-summary-chevron-right i {
-    transform: rotate(90deg) scale(1.1);
-  }
-
-  &[open]:hover > .sd-summary-title .sd-summary-chevron-down i {
-    transform: rotate(180deg) scale(1.1);
-  }
-
   // Hide the card body border when not open
   &:not([open]).sd-card {
     border: none;