Remove matplotlib debug code

tests/test_simpleButler.py

@@ -816,20 +816,6 @@ def test_region_queries(self):
         # Use a region from the first visit.
         first_visit_region = refs[0].dataId.visit.region
 
-        # Debug code to plot some visit detector regions.
-        # Will be removed.
-        polygons = []
-        with butler._query() as query:
-            results = query.dimension_records("visit_detector_region")
-            for rec in results:
-                region = rec.region.to_ivoa_pos()
-                coords = region.split()
-                coords.pop(0)
-                pairs = list(zip(coords[0::2], coords[1::2]))
-                polygons.append(pairs)
-                print(pairs)
-        # plot_poly(polygons)
-
         # Get a visit detector region from the first ref.
         with butler._query() as query:
             results = query.dimension_records("visit_detector_region").where(**refs[0].dataId.mapping)
@@ -892,22 +878,6 @@ def test_time_queries(self):
             self.assertEqual(len(list(with_ts)), 16)
 
 
-def plot_poly(polygons: list[list[tuple[float, float], ...]]):
-    """Plot polygons."""
-    import matplotlib.pyplot as plt
-    from matplotlib.patches import Polygon
-
-    fig, ax = plt.subplots(1, 1)
-
-    for poly in polygons:
-        polygon1 = Polygon(poly, fc=(1, 0, 0, 0.1), ec=(0, 0, 0, 0.25), lw=1)
-        ax.add_patch(polygon1)
-
-    plt.ylim(-0.6, 0)
-    plt.xlim(320.6, 321.12)
-    plt.show()
-
-
 class NameKeyCollectionManagerDirectSimpleButlerTestCase(DirectSimpleButlerTestCase, unittest.TestCase):
     """Run tests against DirectButler implementation using the
     NameKeyCollectionsManager.