[PairPos] Don't compute newFormat

It was wrong, because it would be writing wrong values.

Test suite doesn't seem to catch any.

src/OT/Layout/GPOS/SinglePos.hh

@@ -45,10 +45,7 @@ struct SinglePos
     ValueFormat new_format = src->get_value_format ();
 
     if (glyph_val_iter_pairs)
-    {
       format = get_format (glyph_val_iter_pairs);
-      new_format = src->get_value_format ().get_effective_format (+ glyph_val_iter_pairs | hb_map (hb_second));
-    }
 
     u.format = format;
     switch (u.format) {

src/OT/Layout/GSUB/AlternateSubstFormat1.hh

@@ -42,7 +42,6 @@ struct AlternateSubstFormat1_2
     | hb_map (hb_add (this))
     | hb_apply ([c] (const AlternateSet<Types> &_) { _.closure (c); })
     ;
-
   }
 
   void closure_lookups (hb_closure_lookups_context_t *c) const {}