Remove remnant WAVE_RUN from archive

`$WAVE_RUN` is no longer used in workflow, but one reference remained
in the archive job, which would cause failures. The conditional did
not need to be replaced by `$RUN` since `$RUN` has already been checked
at that point.

Fixes NOAA-EMC#1548

scripts/exglobal_archive.sh

@@ -179,7 +179,7 @@ if [[ ${HPSSARCH} = "YES" || ${LOCALARCH} = "YES" ]]; then
             fi
         fi
 
-        if [ "${DO_WAVE}" = "YES" ] && [ "${WAVE_RUN}" != "gdas" ]; then
+        if [ "${DO_WAVE}" = "YES" ]; then
             targrp_list="${targrp_list} gfswave"
         fi