Revert "fix derp in floating notification launch"

This reverts commit e0c01d1eb3cf0a5f6f716587d4a7cdbdfe880fd8.
Revert "Launch floating notifications from notification panel (long click)"

This reverts commit 21c6c01032afedc1ce29f5e65ba0c99d18f7b6f9.

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
Revert "App sidebar: floating window"

This reverts commit f886a81c67d7ba4658686eede1c695fe8de3a897.