Remove android specific qmake variables.
Remove android specific qmake variables.

Change-Id: I509a458f8b90dcdb3a5bfecc69d3737b60234ea3
Reviewed-by: Eskil Abrahamsen Blomfeldt <e4034124b095075783ce739a2d1c68c0d66fa1fd@digia.com>

kobolabs/qtdoc,kobolabs/qtdoc,kobolabs/qtdoc,kobolabs/qtdoc