sdm: Remove unused libraries, files and functions

1. Remove unused libraries libhdmi, liboverlay and libhwcomposer.
2. Remove unused functions and files from libqdutils.
2. Add querySDEInfo() function in qdutisl to query SDE capability.

Change-Id: Ibea2dd2d22fecb420079e3b7cbbcc57d10f75d49
64 files changed