Revert "Fix torrent speeds unit"

This reverts commit b60be13ab9.

src/widgets/torrent/TorrentQueueItem.tsx

@@ -83,14 +83,14 @@ export const BitTorrentQueueItem = ({ torrent, width, app }: TorrentQueueItemPro
       {width > MIN_WIDTH_MOBILE && (
         <td>
           <Text className={classes.noTextBreak} size="xs">
-            {downloadSpeed > 0 ? `${downloadSpeed.toFixed(1)} MB/s` : '-'}
+            {downloadSpeed > 0 ? `${downloadSpeed.toFixed(1)} Mb/s` : '-'}
           </Text>
         </td>
       )}
       {width > MIN_WIDTH_MOBILE && (
         <td>
           <Text className={classes.noTextBreak} size="xs">
-            {uploadSpeed > 0 ? `${uploadSpeed.toFixed(1)} MB/s` : '-'}
+            {uploadSpeed > 0 ? `${uploadSpeed.toFixed(1)} Mb/s` : '-'}
           </Text>
         </td>
       )}