Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to f1dd31e9d00b2c5f52c1091f167a1a0b3a2ea5ba
  - Merge "reduced code smells"
  - reduced code smells
    
    Removed some unused imports
    
    Issue-ID: SO-2804
    Change-Id: Ib0a7716585448ade0c9571479ed06effaf25738b
    Signed-off-by: Rupinder<rupinsi1@in.ibm.com>
    
diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index ce19da3..f1dd31e 160000
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit ce19da38780453d5e3d945d958948fe2d02c50b4
+Subproject commit f1dd31e9d00b2c5f52c1091f167a1a0b3a2ea5ba