Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to aa0071848512c5570b6f218514716ace958ec7a8
  - Major- Unused "context" local variable.

    If a local variable is declared but not used, it is dead code and should be removed. Doing so will improve maintainability because developers will not wonder what the variable is used for.

    Issue-ID: APPC-1675
    Change-Id: I9cccd6fd529591cbbe7095cce9d5687a712f42d9
    Signed-off-by: anushadasari <danush10@in.ibm.com>

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 3e71b91..aa00718 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 3e71b91278d81f46d7f5f187bfd928edf4b64c89
+Subproject commit aa0071848512c5570b6f218514716ace958ec7a8