cleanup: remove /api/geocode + /api/reverse handlers (extraction #6 shadow)

All three routes (/api/geocode, /api/reverse, /api/reverse/<lat>/<lon>) are
edge-shadowed since extraction #6 — navi-geo :8426 serves them via nginx.

- netsyms_api.py: drop geocode_bp + its three handlers, the bundle-private
  helpers, and module state (TTLCache/lock/_TZ_DB_PATH/_DEM). netsyms_bp
  (/api/netsyms/lookup + /health) survives.
- api.py: drop the geocode_bp import + register_blueprint line.
- DELETE lib/geocode.py, lib/nav_tools.py (both orphaned once the handlers go).
- DELETE reverse_bundle_test.py, geocode_test.py, nav_tools_test.py.

Decouples netsyms_api.py from landclass.py and offroute/dem.py — prerequisite
for cleanups #5 and #6.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lib/nav_tools_test.py

@@ -1,77 +0,0 @@
-"""Tests for nav_tools — run against live Photon + Valhalla services."""
-
-import sys
-import json
-
-from nav_tools import route, reverse_geocode
-
-
-def test_route_named():
-    """route("Buhl Idaho", "Boise Idaho", "auto") returns maneuvers."""
-    print("TEST 1: route('Buhl Idaho', 'Boise Idaho', 'auto')")
-    r = route("Buhl Idaho", "Boise Idaho", "auto")
-    assert r["summary"]["distance_miles"] > 50, f"Expected >50 mi, got {r['summary']['distance_miles']}"
-    assert r["summary"]["time_minutes"] > 60, f"Expected >60 min, got {r['summary']['time_minutes']}"
-    assert len(r["maneuvers"]) > 5, f"Expected >5 maneuvers, got {len(r['maneuvers'])}"
-    assert r["shape"], "Missing polyline shape"
-    print(f"  OK — {r['summary']['distance_miles']} mi, {r['summary']['time_minutes']} min, {len(r['maneuvers'])} maneuvers")
-    print(f"  Origin: {r['origin']['name']}")
-    print(f"  Destination: {r['destination']['name']}")
-    print(f"  First maneuver: {r['maneuvers'][0]['instruction']}")
-
-
-def test_route_coords():
-    """route with raw lat,lon coordinates."""
-    print("\nTEST 2: route('42.5991,-114.7636', '43.615,-116.2023', 'auto')")
-    r = route("42.5991,-114.7636", "43.615,-116.2023", "auto")
-    assert r["summary"]["distance_miles"] > 100, f"Expected >100 mi, got {r['summary']['distance_miles']}"
-    assert len(r["maneuvers"]) > 3, f"Expected >3 maneuvers"
-    print(f"  OK — {r['summary']['distance_miles']} mi, {r['summary']['time_minutes']} min")
-
-
-def test_route_pedestrian():
-    """route with pedestrian mode."""
-    print("\nTEST 3: route('Buhl Idaho', 'Boise Idaho', 'pedestrian')")
-    r = route("Buhl Idaho", "Boise Idaho", "pedestrian")
-    assert r["summary"]["mode"] == "pedestrian"
-    assert r["summary"]["time_minutes"] > r["summary"]["distance_miles"], "Walking should take more min than miles"
-    print(f"  OK — {r['summary']['distance_miles']} mi, {r['summary']['time_minutes']} min (pedestrian)")
-
-
-def test_reverse_geocode():
-    """reverse_geocode near Buhl, Idaho."""
-    print("\nTEST 4: reverse_geocode(42.5991, -114.7636)")
-    result = reverse_geocode(42.5991, -114.7636)
-    assert "Buhl" in result or "Twin Falls" in result or "Idaho" in result, f"Expected Buhl/Idaho, got: {result}"
-    print(f"  OK — {result}")
-
-
-def test_route_bad_origin():
-    """route with nonexistent place returns clean error."""
-    print("\nTEST 5: route('nonexistent place xyz123abc', 'Boise Idaho')")
-    try:
-        r = route("nonexistent place xyz123abc", "Boise Idaho")
-        print(f"  FAIL — expected error, got result: {r['summary']}")
-        return False
-    except ValueError as e:
-        print(f"  OK — clean error: {e}")
-    except RuntimeError as e:
-        print(f"  OK — runtime error: {e}")
-
-
-if __name__ == "__main__":
-    passed = 0
-    failed = 0
-    tests = [test_route_named, test_route_coords, test_route_pedestrian, test_reverse_geocode, test_route_bad_origin]
-
-    for test in tests:
-        try:
-            test()
-            passed += 1
-        except Exception as e:
-            print(f"  FAIL — {e}")
-            failed += 1
-
-    print(f"\n{'='*40}")
-    print(f"Results: {passed} passed, {failed} failed out of {len(tests)}")
-    sys.exit(1 if failed else 0)