[Dune] K1Vector

[Oliver Sander]

Hi guys!
Switching user code from K1Vector to FieldVector<K,1> was easy.
I propose we remove the USE_DEPRECATED_K1 code right away.

Oliver

************************************************************************
* Oliver Sander                **                                      *
* Freie Universität Berlin     ** email: sander at math.fu-berlin.de      *
* Institut für Mathematik II   ** phone: + 49 (30) 838 75217           *
* Arnimallee 2-6               ** fax  : + 49 (30) 838 54977           *
* 14195 Berlin, Germany        ** URL  : www.math.fu-berlin.de/~sander *
************************************************************************