Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 50cef434c34e7bdc206fdcaaa9417096d4a30c4c
  - Merge "Remove unused imports"
  - Remove unused imports
    
    Remove unused imports catalog beans classes
    
    Issue-ID: SO-1490
    
    Change-Id: I2061c2b293f85d4308c188beccfdb34cb17c3aed
    Signed-off-by: Sindhuri.A <arcot.sindhuri@huawei.com>
    
1 file changed