remove ivfflat warnings. it has valid use cases

src/tests/test_collection.py

@@ -590,13 +590,11 @@ def test_ivfflat(client: vecs.Client) -> None:
     bar = client.get_or_create_collection(name="bar", dimension=dim)
     bar.upsert([("a", [1, 2, 3, 4], {})])
 
-    with pytest.warns(UserWarning):
-        bar.create_index(method="ivfflat")  # type: ignore
+    bar.create_index(method="ivfflat")  # type: ignore
     results = bar.query(data=[1, 2, 3, 4], limit=1, probes=50)
     assert len(results) == 1
 
-    with pytest.warns(UserWarning):
-        bar.create_index(method=IndexMethod.ivfflat, replace=True)  # type: ignore
+    bar.create_index(method=IndexMethod.ivfflat, replace=True)  # type: ignore
     results = bar.query(
         data=[1, 2, 3, 4],
         limit=1,
@@ -698,5 +696,4 @@ def test_failover_ivfflat(client: vecs.Client) -> None:
     bar.upsert([("a", [1, 2, 3, 4], {})])
     # this executes an otherwise uncovered line of code that selects ivfflat when mode is 'auto'
     # and hnsw is unavailable
-    with pytest.warns(UserWarning):
-        bar.create_index(method=IndexMethod.auto)
+    bar.create_index(method=IndexMethod.auto)

src/vecs/client.py

@@ -7,7 +7,6 @@
 
 from __future__ import annotations
 
-import warnings
 from typing import TYPE_CHECKING, List, Optional
 
 from deprecated import deprecated
@@ -48,7 +47,7 @@ class Client:
         vx.disconnect()
     """
 
-    def __init__(self, connection_string):
+    def __init__(self, connection_string: str):
         """
         Initialize a Client instance.
 
@@ -72,13 +71,6 @@ def __init__(self, connection_string):
                     )
                 ).scalar_one()
 
-        if not self._supports_hnsw():
-            warnings.warn(
-                UserWarning(
-                    f"vecs will drop support for pgvector < 0.5.0 in version 1.0. Consider updating to latest postgres"
-                )
-            )
-
     def _supports_hnsw(self):
         return not self.vector_version.startswith("0.4")
 

src/vecs/collection.py

@@ -664,13 +664,6 @@ def create_index(
             else:
                 method = IndexMethod.ivfflat
 
-        if method == IndexMethod.ivfflat:
-            warnings.warn(
-                UserWarning(
-                    f"vecs will drop support for ivfflat indexes in version 1.0. upgrade to pgvector >= 0.5.0 and use IndexMethod.hnsw"
-                )
-            )
-
         ops = INDEX_MEASURE_TO_OPS.get(measure)
         if ops is None:
             raise ArgError("Unknown index measure")