Revert "Fix build error"

This reverts commit 8f884c1c9368fc27d65ffae23549591dd558df1f.
Revert "Kill floating activities running in the same..."

This reverts commit e05659c903e232c5ad2b76de29d39f4a4c026273.
Revert "Launch floating notifications from notification panel"

This reverts commit cf8b0ff667e71a34d2eda5b3c28dc2904ef12145.
Revert "Another floating mode fix"

This reverts commit c4b54fe53d1451fc06d1415fc791f43b1b176263.
Revert "Fix floating mode"

This reverts commit 5c05cc452ae5e9343a7c546b15d0a417344af570.
Revert "Floating Window from AOSPA"

This reverts commit 98214e890d50ce1d4822cf4cdad27bb563bd3fed.