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: I1721ea0fd3c79e74da5e131a60f7aa24277c99ba
diff --git a/applications/threadx_demo/CMakeLists.txt b/applications/threadx_demo/CMakeLists.txt
index dd3ad3a..ef20b57 100644
--- a/applications/threadx_demo/CMakeLists.txt
+++ b/applications/threadx_demo/CMakeLists.txt
@@ -25,7 +25,7 @@
 ethosu_add_executable_test(threadx_demo PRIVATE
     SOURCES main.cpp
     SOURCES tx_initialize_low_level.c
-    LIBRARIES threadx)
+    LIBRARIES inference_process threadx)
 target_include_directories(threadx_demo PRIVATE models/mobilenet_v2)
 
 # Use the fast memory to support both 11.12.57 and 11.13.x release