Remove COALESCE from query in enrollment.js

src/libs/routes/enrollment.js

@@ -273,7 +273,7 @@ rqf.addField({
 
 enrollmentApp.get('/', rqf.parse(), rqf.build(), (req, res, next) => {
     log.debug(req.sql.toParam());
-    req.sql.field('COALESCE(COUNT(matricula.id), 0)', 'total')
+    req.sql.field('COUNT(matricula.id)', 'total')
     .field("'Brasil'", 'name')
     .field('matricula.ano_censo', 'year')
     .from('matricula')