Revert "PM / Sleep: User space wakeup sources garbage collector Kconfig option"

This reverts commit 90cc51f2d75631cbbac2d8799599840457515d3e.
Revert "PM / Sleep: Make the limit of user space wakeup sources configurable"

This reverts commit 902df6912364b6d4651a1da7ac3b19869fa6787f.
Revert "PM / Sleep: Add user space interface for manipulating wakeup sources, v3"

This reverts commit fbadbb7a59ee98230ffcc77e53fa47f1e853cb0a.

Conflicts:
	kernel/power/main.c

Change-Id: Icd1f6581ea0ccce58692a1242c6f28f8389b318b
Switch back to old power management in defconfigs

Change-Id: Iae3276f8eb544c81e7479fb7845ec2437527c506