Partial reversion of #1517. Each alias lookup adds 8 to the pids.curr…

…ent bean counter resulting in 64+ concurrent tids (tasks, w/ threads) thus making it susceptible to hit pids.max. Once reached, subshell behavior is unexpected yielding "retry: Resource temporarily unavailable" errors until cgroup capacity is restored.

nvm.sh

@@ -1122,10 +1122,9 @@ nvm_list_aliases() {
         if [ -n "${LTS_ALIAS}" ]; then
           nvm_echo "${LTS_ALIAS}"
         fi
-      } &
+      }
     done
-    wait
-  ) | command sort
+  )
   return
 }