Revert "osd: force alignment for OSD bar"

This reverts commit ff10bd65d6.

Fixes #1631.

sub/osd_libass.c

@@ -111,6 +111,7 @@ static void create_ass_track(struct osd_state *osd, struct osd_object *obj,
         int sid = ass_alloc_style(track);
         track->default_style = sid;
         ASS_Style *style = track->styles + sid;
+        style->Alignment = 5; // top-title, left
         style->Name = strdup("OSD");
         // Set to neutral base direction, as opposed to VSFilter LTR default
         style->Encoding = -1;
@@ -316,8 +317,6 @@ static void get_osd_bar_box(struct osd_state *osd, struct osd_object *obj,
     // Rendering with shadow is broken (because there's more than one shape)
     style->Shadow = 0;
 
-    style->Alignment = 5;
-
     *o_border = style->Outline;
 
     *o_x = get_align(opts->osd_bar_align_x, track->PlayResX, *o_w, *o_border);