Remove submodules

Change-Id: I043211464d9312101d8371da7eb117d40ddb6535
Remove README

Change-Id: I2bfde0082e1032facfa8c1e0fbc62c154c995b1d
Remove modules

Change-Id: I99906c853d2c1f1c139c39b733e6d9f68b3f17e5