Revert "improving cmake for tests"

This reverts commit 3cfe957.

Author: pennam

extras/test/CMakeLists.txt

@@ -6,23 +6,15 @@ cmake_minimum_required(VERSION 2.8)
 
 project(testArduinoIoTCloud)
 
-Include(FetchContent)
-
-FetchContent_Declare(
-  Catch2
-  GIT_REPOSITORY https://github.com/catchorg/Catch2.git
-  GIT_TAG        v3.4.0
-)
-
-FetchContent_MakeAvailable(Catch2)
-
 ##########################################################################
 
 include_directories(include)
 include_directories(../../src)
 include_directories(../../src/cbor)
 include_directories(../../src/property)
 include_directories(../../src/utility/time)
+include_directories(external/catch/v2.13.10/include)
+include_directories(external/fakeit/v2.0.5/include)
 
 ##########################################################################
 
@@ -108,7 +100,5 @@ add_executable(
   ${TEST_TARGET_SRCS}
 )
 
-target_link_libraries( ${TEST_TARGET} Catch2WithMain )
-
 ##########################################################################