boards: qemu_cortex_r5: Remove ignore tags for working tests

This commit removes the ignore tags for the tests that work after the
changes in the PR #22037.

Signed-off-by: Stephanos Ioannidis <[email protected]>

Author: stephanosio

boards/arm/qemu_cortex_r5/qemu_cortex_r5.yaml

@@ -13,8 +13,6 @@ testing:
   default: true
   ignore_tags:
     - benchmark
-    - cmsis_rtos
     - interrupt
-    - kernel
     - memory_protection
     - userspace