.codecheckignore: ignore imported libraries randlib and mbed-trace

Author: LDong-Arm

.codecheckignore

@@ -20,6 +20,8 @@
 ^platform/cxxsupport
 ^platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_MBED_PSA_SRV
 ^platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM
+^platform/mbed-trace
+^platform/randlib
 ^platform/tests/UNITTESTS
 ^events/tests/UNITTESTS
 ^rtos/source/TARGET_CORTEX/rtx4
@@ -31,4 +33,4 @@
 ^UNITTESTS
 ^storage/blockdevice/tests/UNITTESTS
 ^storage/kvstore/tests/UNITTESTS
-^drivers/tests/UNITTESTS
+^drivers/tests/UNITTESTS