opal: deprecate dead code

Remove unused code. The logic has been moved to openpmix/prrte.

Signed-off-by: Wenduo Wang <[email protected]>

Author: wenduwan

contrib/ompi_cplusplus.txt

@@ -132,7 +132,6 @@
 ./opal/util/few.h: defined(c_plusplus)  defined(__cplusplus)
 ./opal/util/keyval_parse.h: defined(c_plusplus)  defined(__cplusplus)
 ./opal/util/malloc.h: defined(c_plusplus)  defined(__cplusplus)
-./opal/util/opal_pty.h: defined(c_plusplus)  defined(__cplusplus)
 ./opal/util/os_path.h: defined(c_plusplus)  defined(__cplusplus)
 ./opal/util/qsort.h: defined(c_plusplus)  defined(__cplusplus)
 ./opal/util/show_help_lex.h: defined(c_plusplus)  defined(__cplusplus)

opal/util/Makefile.am

@@ -63,7 +63,6 @@ headers = \
         numtostr.h \
         opal_environ.h \
         opal_getcwd.h \
-        opal_pty.h \
         os_dirpath.h \
         os_path.h \
         output.h \
@@ -108,7 +107,6 @@ libopalutil_core_la_SOURCES = \
         numtostr.c \
         opal_environ.c \
         opal_getcwd.c \
-        opal_pty.c \
         os_dirpath.c \
         os_path.c \
         output.c \