Do not ignore order on distinct query (go-gorm#1570)

search.go

@@ -2,7 +2,6 @@ package gorm
 
 import (
 	"fmt"
-	"regexp"
 )
 
 type search struct {
@@ -73,13 +72,7 @@ func (s *search) Order(value interface{}, reorder ...bool) *search {
 	return s
 }
 
-var distinctSQLRegexp = regexp.MustCompile(`(?i)distinct[^a-z]+[a-z]+`)
-
 func (s *search) Select(query interface{}, args ...interface{}) *search {
-	if distinctSQLRegexp.MatchString(fmt.Sprint(query)) {
-		s.ignoreOrderQuery = true
-	}
-
 	s.selects = map[string]interface{}{"query": query, "args": args}
 	return s
 }