Merge branch 'bugfix/idf_as_lib_build_on_macos' into 'master'

examples: fix idf as library example build on macOS

See merge request espressif/esp-idf!6638

examples/build_system/cmake/idf_as_lib/stubs/esp32/CMakeLists.txt

@@ -2,5 +2,4 @@ add_library(stub_esp32 STATIC system_api.c flash_ops.c cpu_start.c)
 target_include_directories(stub_esp32 PUBLIC .)
 add_library(stub::esp32 ALIAS stub_esp32)
 
-target_link_libraries(stub_esp32 "-u app_main")
 target_link_libraries(stub_esp32 stub::spi_flash)