Update git submodules

* Update prebuilts/clang/host/linux-x86 from branch 'master'
  to 74a9236def1ef58a3d85bfb557b988945f97dbf0
  - Remove unused clang-r416183c2
    
    Test: presubmit
    Change-Id: I176873578a20c8f98160166e804435778bb23c75
    
1 file changed