test: remove low-value model-catalog mirror tests

These tests asserted that hardcoded curated model lists/constants still
contained specific model strings (e.g. 'glm-5' in provider_model_ids('zai'),
exact context-length values per model key, PROVIDER_TO_MODELS_DEV entries).
They mirror a constant rather than exercise logic, so they only ever break
when models are added/retired and never catch a real bug.

Removed 22 such functions across 7 files (149 deletions, 0 additions).
Behavioral siblings are kept: live-catalog-wins, fallback ordering,
substring/longest-match resolution, normalization, credential discovery,
and probe-tier stepping all still tested.

tests/hermes_cli/test_model_validation.py

@@ -142,10 +142,6 @@ class TestCuratedModelsForProvider:
         assert len(models) > 0
         assert any("claude" in m[0] for m in models)
 
-    def test_zai_returns_glm_models(self):
-        models = curated_models_for_provider("zai")
-        assert any("glm" in m[0] for m in models)
-
     def test_unknown_provider_returns_empty(self):
         assert curated_models_for_provider("totally-unknown") == []
 
@@ -199,9 +195,6 @@ class TestProviderModelIds:
     def test_unknown_provider_returns_empty(self):
         assert provider_model_ids("some-unknown-provider") == []
 
-    def test_zai_returns_glm_models(self):
-        assert "glm-5" in provider_model_ids("zai")
-
     def test_stepfun_prefers_live_catalog(self):
         with patch(
             "hermes_cli.auth.resolve_api_key_provider_credentials",
@@ -222,31 +215,6 @@ class TestProviderModelIds:
              patch("hermes_cli.models._fetch_github_models", return_value=["gpt-5.4", "claude-sonnet-4.6"]):
             assert provider_model_ids("copilot-acp") == ["gpt-5.4", "claude-sonnet-4.6"]
 
-    def test_copilot_falls_back_to_curated_defaults_without_stale_opus(self):
-        with patch("hermes_cli.models._resolve_copilot_catalog_api_key", return_value="gh-token"), \
-             patch("hermes_cli.models._fetch_github_models", return_value=None):
-            ids = provider_model_ids("copilot")
-
-        assert "gpt-5.4" in ids
-        assert "claude-sonnet-4.6" in ids
-        assert "claude-sonnet-4" in ids
-        assert "claude-sonnet-4.5" in ids
-        assert "claude-haiku-4.5" in ids
-        assert "gemini-3.1-pro-preview" in ids
-        assert "claude-opus-4.6" not in ids
-
-    def test_copilot_acp_falls_back_to_copilot_defaults(self):
-        with patch("hermes_cli.models._resolve_copilot_catalog_api_key", return_value="gh-token"), \
-             patch("hermes_cli.models._fetch_github_models", return_value=None):
-            ids = provider_model_ids("copilot-acp")
-
-        assert "gpt-5.4" in ids
-        assert "claude-sonnet-4.6" in ids
-        assert "claude-sonnet-4" in ids
-        assert "gemini-3.1-pro-preview" in ids
-        assert "copilot-acp" not in ids
-        assert "claude-opus-4.6" not in ids
-
 
 # -- fetch_api_models --------------------------------------------------------