fix import time and fmt

Nikita Koryabkin · Nikita Koryabkin · commit 27bffac965be · 2019-12-03T07:42:48.000+03:00
diff --git a/sqlmock_before_go18.go b/sqlmock_before_go18.go
@@ -4,7 +4,9 @@ package sqlmock
 
 import (
 	"database/sql/driver"
+	"fmt"
 	"log"
+	"time"
 )
 
 type namedValue struct {
