refactor: remove '#define MODULE_NAME' from tests

And use target_compile_definitions() instead

cmake/px4_add_gtest.cmake

@@ -116,6 +116,8 @@ function(px4_add_functional_gtest)
 				                                      # also links to fuzztest_gtest_main
 		                                              test_stubs)  # put test_stubs last
 
+		target_compile_definitions(${TESTNAME} PRIVATE MODULE_NAME="${TESTNAME}")
+
 		if(COMPILE_FLAGS)
 			target_compile_options(${TESTNAME} PRIVATE ${COMPILE_FLAGS})
 		endif()

src/modules/manual_control/ManualControlTest.cpp

@@ -31,8 +31,6 @@
  *
  ****************************************************************************/
 
-#define MODULE_NAME "manual_control"
-
 #include <gtest/gtest.h>
 #include "ManualControl.hpp"
 

src/modules/rc_update/RCUpdateTest.cpp

@@ -31,8 +31,6 @@
  *
  ****************************************************************************/
 
-#define MODULE_NAME "rc_update"
-
 #include <gtest/gtest.h>
 #include "rc_update.h"