Switch devenv to use pkg packages

ports/twm/build.sh

Index: ports/twm/build.sh
diff --git a/ports/twm/build.sh b/ports/twm/build.sh
index a521565cbdb6db55d07d839533625ae8b7d52670..01197269fc1c9f52febe42b4c193b936fe19e408 100644
--- a/ports/twm/build.sh
+++ b/ports/twm/build.sh
@@ -34,18 +34,3 @@ BuildStep() {
   LogExecute ${CC} ${CPPFLAGS} ${CFLAGS} -o twm${NACL_EXEEXT} ${SRC_DIR}/*.c\
    *.c -I. -I${SRC_DIR} ${LDFLAGS} ${LIBS}
 }
-
-InstallStep() {
-  return
-}
-
-PublishStep() {
-  PublishByArchForDevEnv
-  ChangeDir ${PUBLISH_DIR}
-  LogExecute cp -f ${BUILD_DIR}/twm${NACL_EXEEXT} twm_${NACL_ARCH}${NACL_EXEEXT}
-  LogExecute python ${NACL_SDK_ROOT}/tools/create_nmf.py\
-   twm_*${NACL_EXEEXT} -s . -o twm.nmf
-  LogExecute python ${TOOLS_DIR}/create_term.py -n twm twm.nmf
-  InstallNaClTerm .
-  LogExecute cp -f ${START_DIR}/*.js .
-}