Remove redundant target_include_directories() from LOG

The same is achieved by including log_headers.

common/utils/LOG/CMakeLists.txt

@@ -10,7 +10,6 @@ else()
   message(STATUS "LTTNG support disabled")
 endif()
 add_library(LOG ${log_sources})
-target_include_directories(LOG PUBLIC .)
 target_link_libraries(LOG PRIVATE CONFIG_LIB)
 target_link_libraries(LOG PUBLIC log_headers)
 if (ENABLE_LTTNG)