Update tox.ini

Author: sl0thentr0py

tox.ini

@@ -10,7 +10,7 @@
 # The file (and all resulting CI YAMLs) then need to be regenerated via
 # "scripts/generate-test-files.sh".
 #
-# Last generated: 2025-08-26T08:59:42.512502+00:00
+# Last generated: 2025-08-26T14:36:10.742978+00:00
 
 [tox]
 requires =
@@ -159,10 +159,6 @@ envlist =
     {py3.7,py3.10,py3.11}-pymongo-v3.13.0
     {py3.7,py3.9,py3.10}-pymongo-v4.0.2
     {py3.9,py3.12,py3.13}-pymongo-v4.14.1
-    {py3.6}-pymongo-v3.5.1
-    {py3.6,py3.10,py3.11}-pymongo-v3.13.0
-    {py3.6,py3.9,py3.10}-pymongo-v4.0.2
-    {py3.9,py3.12,py3.13}-pymongo-v4.14.0
 
     {py3.7}-redis_py_cluster_legacy-v2.0.0
     {py3.7,py3.8}-redis_py_cluster_legacy-v2.1.3