Merge pull request #13175 from Patater/remove-tfm-kvstore-adapter

psa: Remove not needed TF-M ITS KVStore adapter

Author: 0xc0170

TESTS/configs/experimental.json

@@ -0,0 +1,9 @@
+{
+    "target_overrides": {
+        "*": {
+             "target.features_add": [
+                 "EXPERIMENTAL_API"
+             ]
+        }
+    }
+}