Update git submodules

* Update docs/submodules/clamp.git from branch 'elalto'
  to 31fb8d0c57bd1fa8ff338dbc243b6906772ac51c
  - Remove bad url
    
    Remove bad url and useless files
    
    Issue-ID: CLAMP-642
    Change-Id: Iee749c83c061a81da01482e45c056e9d45ccd923
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>
    
1 file changed