Fix an include path issue in esp32 makefile
aws_tests project shouldn't add demos/include to the include paths,
this causing OTA PAL tests to use wrong header file and failing.
@@ -128,7 +128,6 @@ COMPONENT_SRCDIRS += ../.. \
COMPONENT_ADD_INCLUDEDIRS += $(AMAZON_FREERTOS_TESTS_DIR)/include \
$(AMAZON_FREERTOS_3RD_PARTY_DIR)/unity/src \
- $(AMAZON_FREERTOS_DEMOS_DIR)/include \
${AMAZON_FREERTOS_SDK_DIR}/standard/ble/test \
${AMAZON_FREERTOS_ARF_PLUS_DIR}/aws/greengrass/test \
${AMAZON_FREERTOS_ARF_PLUS_DIR}/aws/ota/test \
