remove qmake reference from baremetal doc

Change-Id: If2e5e5e8598e5ae6d5ddccf2936aabf64fbbf1f6
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>

doc/src/baremetal/creator-baremetal-dev.qdoc

@@ -31,9 +31,6 @@
     Linux device plugin. However, if the device does not have Qt libraries, you
     need a fake Qt installation.
 
-    Currently, you must use qmake to generate Makefiles for building the
-    application.
-
     The bare metal device type accepts custom GDB commands that you specify in
     the device options.