Clean up vendor files and init.d

Remove duplicate defines for livewallpapers which are in
full_base.mk now anyways. Remove unused init.d scripts
that were part of some older performance settings.
Add basic init.d scripts that can be added to at a later
time. Add some base sysctl.conf settings that I will be
adding to Performance Settings to override.

Change-Id: Iaadbd3b89ffa4e28cb013442e7c8282f805c572d

Conflicts:
	configs/common.mk
	prebuilt/common/etc/init.local.rc