Revert "[cmake] added eigen and SuperLu"

This reverts commit 5d552579cc0467c80ca1d644ede91cd1fb56b371.

Conflicts:

	dune/stuff/function/expression.hh

Reverted because CMake hard fails if Eigen's not present:
CMake Error at cmake/FindEigen3.cmake:33 (file):
  file Internal CMake error when trying to open file:
  ABSPATH/multiscale-super/dune-stuff/../local/include/eigen3/Eigen/src/Core/util/Macros.h
  for reading.

CMakeLists.txt

@@ -45,16 +45,6 @@ SET( GRIDDIM
 	"2" CACHE STRING
 	"GRIDDIM" )
 
-# superlu
-find_package( SuperLU REQUIRED)
-include_directories( ${SUPERLU_INCLUDES} )
-link_directories( ${SUPERLU_LIBRARY_DIRS} )
-
-# eigen3
-set( EIGEN3_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../local/include/eigen3")
-find_package( Eigen3 REQUIRED)
-include_directories(${EIGEN3_INCLUDE_DIR})
-
 CONFIGURE_FILE( ${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_config.h.in ${CMAKE_CURRENT_BINARY_DIR}/cmake_config.h )
 ADD_DEFINITIONS( ${CUSTOM_FLAGS} )