Remove redundant form validation

{{cookiecutter.repo_name}}/{{cookiecutter.repo_name}}/public/views.py

@@ -51,13 +51,10 @@ def register():
                         email=form.email.data,
                         password=form.password.data,
                         active=True)
-        try:
         db.session.add(new_user)
         db.session.commit()
         flash("Thank you for registering. You can now log in.", 'success')
         return redirect(url_for('public.home'))
-        except IntegrityError as err:
-            flash("That username and/or email already exists. Try again.", 'warning')
     else:
         flash_errors(form)
     return render_template('public/register.html', form=form)