Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "delete unuse code in directory legacy"
  - delete unuse code in directory legacy

    Change-Id: I31427e8a59ea241e882f41222f211fffe709043f
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index b5a1151..30bedcb 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit b5a115179cc75be6ca853d740dfce393fc8c1fd2
+Subproject commit 30bedcbde528b832357a296091816cf5e52031cd