Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to 90d1e3551488a73e74fb54d320be6e29678ca270
  - Merge "removed code smells"
  - removed code smells
    
    Removed some unused imports and 2 statments from one line
    
    Issue-ID: PORTAL-869
    Change-Id: I99f97a7a7c16a4ff2d28c40cfd88546dfe799a29
    Signed-off-by: Rupindewr<rupinsi1@in.ibm.com>
    
1 file changed