wid: l2cap: Don't clear data on WID 104

PTS is not waiting with sending data until this WID returns. This
results in race as we may clear data that was sent in current run
prior to handling WID.

autopts/wid/l2cap.py

@@ -346,6 +346,7 @@ def hdl_wid_102(_: WIDParams):
 
 def hdl_wid_103(_: WIDParams):
     stack = get_stack()
+    stack.l2cap.clear_data()
     chan = stack.l2cap.chan_lookup_id(0)
     time.sleep(10)
     btp.l2cap_reconfigure(None, None, chan.our_mtu + 1,
@@ -354,8 +355,6 @@ def hdl_wid_103(_: WIDParams):
 
 
 def hdl_wid_104(_: WIDParams):
-    stack = get_stack()
-    stack.l2cap.clear_data()
     return True