Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "remove replicated dependencies"
  - remove replicated dependencies

    Change-Id: Ie82153d201a06e7008465a5ea116b389dc1311c6
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index ee66722..252e6fc 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit ee667225c20ded7d6dbfc38e8631fc96cc0dea2a
+Subproject commit 252e6fc6dd329b858dfc3773e42f52529ebe7659