Fix last two test failures

Author: kyleconroy

internal/endtoend/testdata/join_right/mysql/go/models.go

@@ -1,3 +1,3 @@
-CREATE TABLE foo (id serial not null, bar_id int references bar(id));
-CREATE TABLE bar (id serial not null);
+CREATE TABLE foo (id integer not null, bar_id integer references bar(id));
+CREATE TABLE bar (id integer not null);
 

internal/endtoend/testdata/join_right/mysql/go/query.sql.go

@@ -1,3 +1,3 @@
-CREATE TABLE bar (id serial not null);
-CREATE TABLE foo (id serial not null, bar integer references bar(id));
+CREATE TABLE bar (id integer not null);
+CREATE TABLE foo (id integer not null, bar integer references bar(id));