Revert "Add a background scanning timer to restore the watermarks to the pages_lots level and only call on it if kswapd has not been called upon for the last 5 seconds. This allows us to balance all zones to the more generous pages_lots watermark at a time unrelated to page allocation thus leading to lighter levels of vm load when called upon under page allocation."

This reverts commit 837eb3a0922d5720e807e45c9608de4ab7e19503.
Makefile: Remove strict checking of implicit declaration of variable