comctl32: GroupBox can have multiline text.

Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/comctl32/button.c

@@ -282,9 +282,6 @@ static UINT BUTTON_BStoDT( DWORD style, DWORD ex_style )
             default:         dtStyle |= DT_VCENTER; break;
         }
     }
-    else
-        /* GroupBox's text is always single line and is top aligned. */
-        dtStyle |= DT_SINGLELINE;
 
     return dtStyle;
 }