Rename OMITTED_SYSTEMATIC_DEPENDENCIES

It isn't a set of dependencies, it's a set of symbols. So give it a
name that describes the symbol rather than a name that pretends it's a
collection of dependencies.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/scripts/set_psa_test_dependencies.py b/tests/scripts/set_psa_test_dependencies.py
index ec10387..7510a0d 100755
--- a/tests/scripts/set_psa_test_dependencies.py
+++ b/tests/scripts/set_psa_test_dependencies.py
@@ -107,7 +107,7 @@
     """Whether dep is a PSA dependency which is determined systematically."""
     return dep.startswith('PSA_WANT_')
 
-OMITTED_SYSTEMATIC_DEPENDENCIES = frozenset([
+WITHOUT_SYSTEMATIC_DEPENDENCIES = frozenset([
     'PSA_ALG_AEAD_WITH_TAG_LENGTH', # only a modifier
     'PSA_ALG_ANY_HASH', # only meaningful in policies
     'PSA_ALG_KEY_AGREEMENT', # only a way to combine algorithms
@@ -145,7 +145,7 @@
 
 def dependencies_of_symbol(symbol):
     """Return the dependencies for a symbol that designates a cryptographic mechanism."""
-    if symbol in OMITTED_SYSTEMATIC_DEPENDENCIES:
+    if symbol in WITHOUT_SYSTEMATIC_DEPENDENCIES:
         return frozenset()
     if symbol in SPECIAL_SYSTEMATIC_DEPENDENCIES:
         return SPECIAL_SYSTEMATIC_DEPENDENCIES[symbol]