Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - delete test scripts which are copied from releng/jjb/qtip

    It is not suitable to copy these test scripts to QTIP.

    Change-Id: I64df9f0b7b6886ccdef89e28db26cfc1f83df6d8
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index d8e9b38..7974734 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit d8e9b38874db8ccf5d4d9f08c387f2112ed8cfae
+Subproject commit 79747348572401f0cf48f141f054cc4203d6d846