Remove support of plug-in mechanism.

This API is obsolete and can be fully replaced with existing `api.h`.

JerryScript-DCO-1.0-Signed-off-by: Evgeny Gavrin e.gavrin@samsung.com

tests/jerry/extensions.js

@@ -1,45 +0,0 @@
-// Copyright 2015 Samsung Electronics Co., Ltd.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// TODO: Test other field types
-// TODO: Test functions
-
-assert(Jerry.io.platform === "linux");
-
-Jerry.io.print_uint32 (1);
-Jerry.io.print_string (Jerry.io.platform);
-
-try
-{
-  // Argument type mismatch
-  Jerry.io.print_uint32 ('1');
-
-  assert (false);
-}
-catch (e)
-{
-  assert (e instanceof TypeError);
-}
-
-try
-{
-  // Argument type mismatch
-  Jerry.io.print_string (1);
-
-  assert (false);
-}
-catch (e)
-{
-  assert (e instanceof TypeError);
-}