Revert "limit to kernel tests"

This reverts commit fa897f3.

Author: nashif

.github/workflows/twister.yaml

@@ -238,7 +238,7 @@ jobs:
         run: |
           export ZEPHYR_BASE=${PWD}
           export ZEPHYR_TOOLCHAIN_VARIANT=zephyr
-          ./scripts/twister -T tests/kernel --subset ${{matrix.subset}}/${{ strategy.job-total }} ${TWISTER_COMMON} ${PUSH_OPTIONS}
+          ./scripts/twister --subset ${{matrix.subset}}/${{ strategy.job-total }} ${TWISTER_COMMON} ${PUSH_OPTIONS}
           if [ "${{matrix.subset}}" = "1" ]; then
             ./scripts/zephyr_module.py --twister-out module_tests.args
             if [ -s module_tests.args ]; then