revert icon change

Author: JoCa96

packages/sit-onyx/src/components/OnyxIcon/OnyxIcon.vue

@@ -34,7 +34,6 @@ const props = defineProps<OnyxIconProps>();
     min-width: var(--icon-size);
     height: var(--icon-size);
     fill: var(--icon-color);
-    vertical-align: bottom;
 
     & > svg {
       // display svg as block instead of default inline, to remove vertical alignment