Clean up unnecessary code in L1:
Removed the unused variables, and macros and compiled with zero warnings.
FATAL used in all tests is removed except for init and term APIs.
Reviewed the usage of casting.
Re-checked if any new API interface has been added recently and requires an L1 test case, no new API interface was found.
Clean up unnecessary code in L1: Removed the unused variables, and macros and compiled with zero warnings. FATAL used in all tests is removed except for init and term APIs.
Reviewed the usage of casting.
Re-checked if any new API interface has been added recently and requires an L1 test case, no new API interface was found.