ANDROID: configs: remove config fragments

The kernel config fragments for Android have moved into
their own repository located at

https://android.googlesource.com/kernel/configs/



Bug: 63994171
Change-Id: I837bac54cb5c90e6a6eb0f6f0ad5c90588c1a46a
Signed-off-by: Steve Muckle <smuckle@google.com>