Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/fraser'
  - Delete unmaintained/useless tests

    Change-Id: I0c0606befb4e53fb503d9e5fcbf7d3bdf2237824
    Signed-off-by: Yang (Gabriel) Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit 857d64c56d918f7925e65cfc7e49dbe391454864)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 8b8a2ca..2dd93f5 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 8b8a2ca5a993b10f9c5cf3955b705fa2da024fe2
+Subproject commit 2dd93f5cb51e656fad21f50ccbb437aa3f2d1c92