Fixed #23495 -- Stopped swallowing real settings import error

Thanks papaloizouc for the report.

django/conf/__init__.py

@@ -90,14 +90,7 @@ class Settings(BaseSettings):
         # store the settings module in case someone later cares
         self.SETTINGS_MODULE = settings_module
 
-        try:
-            mod = importlib.import_module(self.SETTINGS_MODULE)
-        except ImportError as e:
-            raise ImportError(
-                "Could not import settings '%s' (Is it on sys.path? Is there an "
-                "import error in the settings file?): %s"
-                % (self.SETTINGS_MODULE, e)
-            )
+        mod = importlib.import_module(self.SETTINGS_MODULE)
 
         tuple_settings = ("INSTALLED_APPS", "TEMPLATE_DIRS", "LOCALE_PATHS")
         self._explicit_settings = set()