update gitignore

.gitignore

 /runtime
 /.idea
-/thinkphp
 /vendor
 /phpmyadmin
 /.travis.yml
@@ -17,5 +16,4 @@
 /public/dist
 /public/dist2
 /public/static/uploads
-/public/static/xadmin
-/config
\ No newline at end of file
+/public/static/xadmin
\ No newline at end of file