Revert "modify app switch key to block recents dialog box when hardware key custom actions are being used"

This reverts commit 1118630e8c6748046e80179d28b11323dd5d9a80.
remove call for recent apps dialog box. This was originally removed when custom hardware key rebinding was addedbecause it interefers with using hardware APP_SWITCH_KEY for any other use on single press. It was added back on this commit, hopefully unintentionally. https://github.com/jrior001/frameworks_base/commit/dc0377bb12acf8829221e47f990e308269216014 . All the commits merged on that commit were from AOKP which has not yet added hardware key rebinding.