all.sh: remove MBEDTLS_PEM_PARSE_C exception from check_test_dependencies()

Since we officially disabled support for importing of PEM formatted keys
into PSA we removed dedicated tests from test_suite_psa_crypto. As a
consequence MBEDTLS_PEM_PARSE_C is no more an exception for
component_check_test_dependencies().

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index f0a0058..318df37 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1069,9 +1069,6 @@
     echo "MBEDTLS_ECP_RESTARTABLE" >> $expected
     # No PSA equivalent - needed by some init tests
     echo "MBEDTLS_ENTROPY_NV_SEED" >> $expected
-    # Used by two tests that are about an extension to the PSA standard;
-    # as such, no PSA equivalent.
-    echo "MBEDTLS_PEM_PARSE_C" >> $expected
 
     # Compare reality with expectation.
     # We want an exact match, to ensure the above list remains up-to-date.