remove dune-istl's support for the `am2cmake` conversion

The last bits in dune-common were removed in dune-common!719.

CMakeLists.txt

@@ -26,7 +26,6 @@ dune_project()
 add_subdirectory(cmake/modules)
 add_subdirectory(dune)
 add_subdirectory(doc)
-add_subdirectory(lib)
 
 # if Python bindings are enabled, include necessary sub directories.
 if( DUNE_ENABLE_PYTHONBINDINGS )

lib/CMakeLists.txt

-install(FILES duneistlam2cmake.lib
-  DESTINATION ${CMAKE_INSTALL_BINDIR}/../lib)

lib/duneistlam2cmake.lib

-# -*-sh-*-
-
-##########################################
-###
-### Function for converting configure options
-### to CMake options for dune-common
-###
-##########################################
-
-# CMake Packages are case sensitive
-# This is a list of packages whose names converted
-# to lower case are used for configures
-# --with-<package> or without-<package> options
-#
-
-dune_istl_options_am2cmake(){
-    local CMAKE_PACKAGES="ParMETIS SuperLU METIS"
-    default_am2cmake_options $CMAKE_PACKAGES
-    default_am2cmake_libraries $CMAKE_PACKAGES
-}