Remove ethosu_core and ethosu_applications

Interface libraries ethosu_core and ethosu_applications are removed.
Each application shall depend directly on the libraries they need.

Change-Id: I4d37c6c50aa276beaa8e2681a63cea90977477ce
diff --git a/applications/CMakeLists.txt b/applications/CMakeLists.txt
index 88dd052..1f6f6aa 100644
--- a/applications/CMakeLists.txt
+++ b/applications/CMakeLists.txt
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019-2021 Arm Limited. All rights reserved.
+# SPDX-FileCopyrightText: Copyright 2019-2022 Arm Limited and/or its affiliates <open-source-office@arm.com>
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -16,8 +16,5 @@
 # limitations under the License.
 #
 
-add_library(ethosu_applications INTERFACE)
-
 # Build inference process
 add_subdirectory(inference_process)
-target_link_libraries(ethosu_applications INTERFACE inference_process)