Remove hybi sub directory for WebSocket layout tests

LayoutTests/http/tests/websocket/tests/hybi/pong_wsh.py

Index: LayoutTests/http/tests/websocket/tests/hybi/pong_wsh.py
diff --git a/LayoutTests/http/tests/websocket/tests/hybi/pong_wsh.py b/LayoutTests/http/tests/websocket/tests/hybi/pong_wsh.py
deleted file mode 100644
index 612aac5f83f607e23896280a1507acb73b90159d..0000000000000000000000000000000000000000
--- a/LayoutTests/http/tests/websocket/tests/hybi/pong_wsh.py
+++ /dev/null
@@ -1,19 +0,0 @@
-from mod_pywebsocket import common
-from mod_pywebsocket import msgutil
-
-
-def web_socket_do_extra_handshake(request):
-    pass
-
-
-def web_socket_transfer_data(request):
-    msgutil.send_ping(request, 'Hello, world!')
-
-    # We need to use an internal function to detect a pong frame from the client.
-    opcode, payload, final, reserved1, reserved2, reserved3 = request.ws_stream._receive_frame()
-    if opcode == common.OPCODE_PONG and payload == 'Hello, world!' and final and not reserved1 and not reserved2 and not reserved3:
-        msgutil.send_message(request, 'PASS')
-    else:
-        msgutil.send_message(request,
-                             'FAIL: Received unexpected frame: opcode = %r, payload = %r, final = %r, reserved1 = %r, reserved2 = %r, reserved3 = %r' %
-                             (opcode, payload, final, reserved1, reserved2, reserved3))