BUG/MINOR: spoe: Don't systematically wakeup SPOE stream in the applet handler

This can lead to wakeups in loop between the SPOE stream and the SPOE applets
waiting to receive agent messages (mainly AGENT-HELLO and AGENT-DISCONNECT).

This patch must be backported to 1.9 and 1.8.
diff --git a/src/flt_spoe.c b/src/flt_spoe.c
index 0f72de8..63d40a6 100644
--- a/src/flt_spoe.c
+++ b/src/flt_spoe.c
@@ -1943,8 +1943,6 @@
 
 	if (SPOE_APPCTX(appctx)->task->expire != TICK_ETERNITY)
 		task_queue(SPOE_APPCTX(appctx)->task);
-	si_oc(si)->flags |= CF_READ_DONTWAIT;
-	task_wakeup(si_strm(si)->task, TASK_WOKEN_IO);
 }
 
 struct applet spoe_applet = {