Revert "lowmemorykiller.c: Fix compiler warning about the type of the module parameter"

This reverts commit aec8e1c4b1c6821889737b6612f1e96d29e67f5c.
Revert "staging: android/lowmemorykiller: Do not kill kernel threads"

This reverts commit 8340acd4fd10438cf8d3e7f32b8f53564bb5f182.
Revert "staging: android/lowmemorykiller: No need for task->signal check"

This reverts commit 1912e3693c0bf641bbe892198676aa8b088d81fe.
Revert "staging: android/lowmemorykiller: Better mm handling"

This reverts commit 04aacb6517ca209ce70c52de4acdfc756a5bcb39.
Revert "staging: android/lowmemorykiller: Don't grab tasklist_lock"

This reverts commit 0bff3017166adc1a37cc27434235a2200ab73803.
Revert "Staging: android: fixed 80 characters warnings in lowmemorykiller.c"

This reverts commit e108ab1d5996ed7b6f57e29a4433a538f1f14de7.
Revert "staging: android: lowmemorykiller: well-marked debug print"

This reverts commit 7deeaf7d90afbf6f0d0ad60a08943f1267826b69.