Remove duplicate set of print_notnull

I inserted the second one by mistake in commit 14e87ffa5c.

Reported-by: jian he <jian.universality@gmail.com>
Confirmed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Discussion: https://postgr.es/m/CACJufxFqckBFxPfCixHHbOr0zMLksviTj2m3o12-tErfx_PvTg@mail.gmail.com

src/bin/pg_dump/pg_dump.c

@@ -16681,11 +16681,6 @@ dumpTableSchema(Archive *fout, const TableInfo *tbinfo)
 											  tbinfo->attrdefs[j]->adef_expr);
 					}
 
-					print_notnull = (tbinfo->notnull_constrs[j] != NULL &&
-									 (tbinfo->notnull_islocal[j] ||
-									  dopt->binary_upgrade ||
-									  tbinfo->ispartition));
-
 					if (print_notnull)
 					{
 						if (tbinfo->notnull_constrs[j][0] == '\0')