fix: Remove unused enable_python_native_blobs setting

This setting was defined but never read by any code - dead code.
Removed from:
- Config class definition
- Template generation
- Test that used it (test still validates error suppression)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dimitri-yatsenko

docs/design/thread-safe-mode.md

@@ -58,7 +58,6 @@ All settings become connection-scoped and are accessed via `conn.config` (read/w
 | `display_width` | int | 14 | Column width for display |
 | `show_tuple_count` | bool | True | Show tuple count in repr |
 | `loglevel` | str | "INFO" | Logging level |
-| `enable_python_native_blobs` | bool | True | Use Python-native blob serialization |
 | `filepath_checksum_size_limit` | int | None | Max file size for checksum |
 
 Connection parameters (set at creation, read-only after):
@@ -428,7 +427,6 @@ class ConnectionConfig:
         "display_width": 14,
         "show_tuple_count": True,
         "loglevel": "INFO",
-        "enable_python_native_blobs": True,
         "filepath_checksum_size_limit": None,
     }
 

src/datajoint/settings.py

@@ -347,7 +347,6 @@ class Config(BaseSettings):
         description="Thread-safe mode. When True, global config access is blocked. "
         "Once enabled, cannot be disabled. Use Connection.from_config() instead.",
     )
-    enable_python_native_blobs: bool = True
     filepath_checksum_size_limit: int | None = None
 
     # Cache paths
@@ -850,7 +849,6 @@ def save_template(
                 },
                 "loglevel": "INFO",
                 "safemode": True,
-                "enable_python_native_blobs": True,
                 "cache": None,
                 "query_cache": None,
                 "download_path": ".",

tests/integration/test_jobs.py

@@ -108,10 +108,9 @@ def test_sigterm(clean_jobs, schema_any):
 
 
 def test_suppress_dj_errors(clean_jobs, schema_any):
-    """Test that DataJoint errors are suppressible without native py blobs."""
+    """Test that DataJoint errors are suppressible."""
     error_class = schema.ErrorClass()
-    with dj.config.override(enable_python_native_blobs=False):
-        error_class.populate(reserve_jobs=True, suppress_errors=True)
+    error_class.populate(reserve_jobs=True, suppress_errors=True)
     assert len(schema.DjExceptionName()) == len(error_class.jobs.errors) > 0