Update git submodules

* Update docs/submodules/so/libs.git from branch 'master'
  to 1d4c6368fa6a17121f01a8eea90fb616cfaa7c11
  - Merge "Remove unused import, variable change"
  - Remove unused import, variable change

    Removed unused import, constructor placing and attribute name change

    Issue-ID: SO-1490

    Change-Id: I8b4d940d8edc4b462ad5db9c7837f02d5a2ce991
    Signed-off-by: Sindhuri.A <arcot.sindhuri@huawei.com>

diff --git a/docs/submodules/so/libs.git b/docs/submodules/so/libs.git
index 77c0aa0..1d4c636 160000 (submodule)
--- a/docs/submodules/so/libs.git
+++ b/docs/submodules/so/libs.git
@@ -1 +1 @@
-Subproject commit 77c0aa09fa2742d59b51c774037cb9399c760545
+Subproject commit 1d4c6368fa6a17121f01a8eea90fb616cfaa7c11