samples: tfm: Remove old 'tfm' tag

To avoid confusion having both a 'tfm' and a 'trusted-firmware-m' tag,
remove the old 'tfm' tag entirely.  Any external test frameworks that are
using the 'tfm' tag will need to be changed to account for this.

Signed-off-by: David Brown <david.brown@linaro.org>

samples/tfm_integration/psa_crypto/sample.yaml

@@ -7,7 +7,6 @@ tests:
   sample.psa_crypto:
     tags:
       - introduction
-      - tfm
       - trusted-firmware-m
       - crypto
       - csr

samples/tfm_integration/psa_protected_storage/sample.yaml

@@ -29,6 +29,5 @@ common:
 tests:
   sample.tfm.protected_storage:
     tags:
-      - tfm
       - trusted-firmware-m
       - mcuboot

samples/tfm_integration/tfm_ipc/sample.yaml

@@ -6,7 +6,6 @@ tests:
   sample.tfm_ipc:
     tags:
       - introduction
-      - tfm
       - trusted-firmware-m
       - mcuboot
     platform_allow:
@@ -31,7 +30,6 @@ tests:
   sample.tfm_ipc.no_bl2:
     tags:
       - introduction
-      - tfm
       - trusted-firmware-m
     platform_allow: mps2_an521_ns
     extra_configs:

samples/tfm_integration/tfm_psa_test/sample.yaml

@@ -1,6 +1,5 @@
 common:
   tags:
-    - tfm
     - trusted-firmware-m
     - mcuboot
   platform_allow:

samples/tfm_integration/tfm_regression_test/sample.yaml

@@ -1,6 +1,5 @@
 common:
   tags:
-    - tfm
     - trusted-firmware-m
     - mcuboot
   platform_allow:

samples/tfm_integration/tfm_secure_partition/sample.yaml

@@ -1,6 +1,5 @@
 common:
   tags:
-    - tfm
     - trusted-firmware-m
   platform_allow:
     - mps2_an521_ns
@@ -25,6 +24,5 @@ sample:
 tests:
   sample.tfm.secure_partition:
     tags:
-      - tfm
       - trusted-firmware-m
       - mcuboot