Revert "[autotools] Use METIS flags where appropriate."

This reverts commit 6132d0df.
It (METIS) does not seem needed for compilation and the patch
forced the user and downstream modules to add additional compile
 and linker flags.

dune/istl/paamg/test/Makefile.am

@@ -87,15 +87,12 @@ pamgtest_SOURCES = parallelamgtest.cc
 pamgtest_CPPFLAGS = $(AM_CPPFLAGS)		\
 	$(DUNEMPICPPFLAGS)			\
 	$(SUPERLU_CPPFLAGS)			\
-	$(PARMETIS_CPPFLAGS)			\
-	$(METIS_CPPFLAGS)
+	$(PARMETIS_CPPFLAGS)
 pamgtest_LDFLAGS = $(AM_LDFLAGS)		\
 	$(DUNEMPILDFLAGS)			\
-	$(PARMETIS_LDFLAGS)			\
-	$(METIS_LDFLAGS)
+	$(PARMETIS_LDFLAGS)
 pamgtest_LDADD =				\
 	$(PARMETIS_LIBS)			\
-	$(METIS_LIBS)			\
 	$(SUPERLU_LIBS)				\
 	$(DUNEMPILIBS)				\
 	$(LDADD)
@@ -104,15 +101,12 @@ pamg_comm_repart_test_SOURCES = parallelamgtest.cc
 pamg_comm_repart_test_CPPFLAGS = $(AM_CPPFLAGS)		\
 	$(DUNEMPICPPFLAGS)			\
 	$(SUPERLU_CPPFLAGS)			\
-	$(PARMETIS_CPPFLAGS) -DAMG_REPART_ON_COMM_GRAPH \
-	$(METIS_CPPFLAGS)
+	$(PARMETIS_CPPFLAGS) -DAMG_REPART_ON_COMM_GRAPH
 pamg_comm_repart_test_LDFLAGS = $(AM_LDFLAGS)		\
 	$(DUNEMPILDFLAGS)			\
-	$(PARMETIS_LDFLAGS)			\
-	$(METIS_LDFLAGS)
+	$(PARMETIS_LDFLAGS)
 pamg_comm_repart_test_LDADD =				\
 	$(PARMETIS_LIBS)			\
-	$(METIS_LIBS)			\
 	$(SUPERLU_LIBS)				\
 	$(DUNEMPILIBS)				\
 	$(LDADD)

dune/istl/test/Makefile.am

@@ -158,15 +158,12 @@ if MPI
   matrixredisttest_SOURCES = matrixredisttest.cc
   matrixredisttest_CPPFLAGS = $(AM_CPPFLAGS)	\
 	$(DUNEMPICPPFLAGS)			\
-	${PARMETIS_CPPFLAGS}                    \
-        ${METIS_CPPFLAGS}
+	${PARMETIS_CPPFLAGS}
   matrixredisttest_LDFLAGS = $(AM_LDFLAGS)	\
 	$(DUNEMPILDFLAGS)			\
-	${PARMETIS_LDFLAGS}                     \
-        ${METIS_LDFLAGS}
+	${PARMETIS_LDFLAGS}
   matrixredisttest_LDADD =			\
 	${PARMETIS_LDFLAGS} ${PARMETIS_LIBS}	\
-	${METIS_LDFLAGS} ${METIS_LIBS}	\
 	${DUNEMPILIBS}				\
 	$(LDADD)
 endif