sessions: remove sessions attr related funcs

forum decided attrs had enough problems already and shouldn't be
extended to other mpi objects, so sessions attrs are not part
of the MPI 4.0 standard

related to #47

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

ompi/mpi/c/Makefile.am

@@ -349,18 +349,13 @@ libmpi_c_mpi_la_SOURCES = \
         sendrecv_replace.c \
         session_c2f.c \
         session_create_errhandler.c \
-        session_create_keyval.c \
-        session_delete_attr.c \
-        session_get_attr.c \
         session_get_info.c \
         session_get_num_psets.c \
         session_get_nth_pset.c \
         session_get_pset_info.c \
         session_init.c \
         session_f2c.c \
         session_finalize.c \
-        session_free_keyval.c \
-        session_set_attr.c \
         session_set_info.c \
         ssend_init.c \
         ssend.c \

ompi/mpi/c/profile/Makefile.am

@@ -329,18 +329,13 @@ nodist_libmpi_c_pmpi_la_SOURCES = \
         psendrecv_replace.c \
         psession_c2f.c \
         psession_create_errhandler.c \
-        psession_create_keyval.c \
-        psession_delete_attr.c \
-        psession_get_attr.c \
         psession_get_info.c \
         psession_get_num_psets.c \
         psession_get_nth_pset.c \
         psession_get_pset_info.c \
         psession_init.c \
         psession_f2c.c \
         psession_finalize.c \
-        psession_free_keyval.c \
-        psession_set_attr.c \
         psession_set_info.c \
         pssend_init.c \
         pssend.c \