Revert "QNX: Add qt.conf file"

It breaks patching binaries, .pc, .la, .pri, etc files using the IFW since the patching relies on the non-patched output of 'qmake -query' which is not the case when qt.conf is present.

This reverts commit bf880661876d03373f430ebfcb2aba5eb83c3514

Change-Id: Id873333e0d1f520144fb85155b198c09e4b1fabf
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>